TWI594861B - Screw, extruder and extrusion method for extruder - Google Patents

Screw, extruder and extrusion method for extruder Download PDF

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Publication number
TWI594861B
TWI594861B TW104112709A TW104112709A TWI594861B TW I594861 B TWI594861 B TW I594861B TW 104112709 A TW104112709 A TW 104112709A TW 104112709 A TW104112709 A TW 104112709A TW I594861 B TWI594861 B TW I594861B
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TW
Taiwan
Prior art keywords
screw
raw material
conveying
extruder
passage
Prior art date
Application number
TW104112709A
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Chinese (zh)
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TW201607719A (en
Inventor
Akiyoshi Kobayashi
Shigeyuki Fujii
Takafumi Sameshima
Hiroshi Shimizu
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Toshiba Machine Co Ltd
Hsp Tech Inc
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Publication of TW201607719A publication Critical patent/TW201607719A/en
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Publication of TWI594861B publication Critical patent/TWI594861B/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/428—Parts or accessories, e.g. casings, feeding or discharging means
    • B29B7/429—Screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/422—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw sections co-operating, e.g. intermeshing, with elements on the wall of the surrounding casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/426—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with consecutive casings or screws, e.g. for charging, discharging, mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/482—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
    • B29B7/483—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs the other mixing parts being discs perpendicular to the screw axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/487—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with consecutive casings or screws, e.g. for feeding, discharging, mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7461—Combinations of dissimilar mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7485—Systems, i.e. flow charts or diagrams; Plants with consecutive mixers, e.g. with premixing some of the components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/82—Heating or cooling
    • B29B7/823—Temperature control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/84—Venting or degassing ; Removing liquids, e.g. by evaporating components
    • B29B7/845—Venting, degassing or removing evaporated components in devices with rotary stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/402—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/51—Screws with internal flow passages, e.g. for molten material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/535—Screws with thread pitch varying along the longitudinal axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/54—Screws with additional forward-feeding elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/55—Screws having reverse-feeding elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/66—Recycling the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating
    • B29B7/726—Measuring properties of mixture, e.g. temperature or density

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

擠壓機用螺桿、擠壓機以及擠壓方法 Screw, extruder and extrusion method for extruder

本發明有關一種用以將連續供給之原料予以混煉而生成混煉物、並將該混煉物連續擠出之擠壓機用螺桿、擠壓機以及擠壓方法。 The present invention relates to a screw for an extruder, an extruder, and an extrusion method for kneading a continuously supplied raw material to form a kneaded product, and continuously extruding the kneaded product.

作為將原料混煉之技術，專利文獻1曾揭示一種可在不使用添加劑等之下，將原料以奈米等級予以分散化並混煉之批式混煉裝置。該批式混煉裝置具備：反饋型螺桿、及供該螺桿可旋轉地插通之缸筒。於該混煉裝置中，於將供給至缸筒內之原料自螺桿之後端送至前端之間隙後，再自該間隙回送到螺桿之後端，並重複此循環處理。 As a technique for kneading a raw material, Patent Document 1 discloses a batch kneading apparatus which can disperse and knead a raw material in a nanometer scale without using an additive or the like. The batch kneading device includes a feedback type screw and a cylinder tube through which the screw is rotatably inserted. In the kneading apparatus, the raw material supplied into the cylinder is sent from the rear end of the screw to the gap of the front end, and then returned to the rear end of the screw from the gap, and the circulation process is repeated.

於循環處理中，原料於自螺桿之後端被送至前端之期間，係被賦與因旋轉之螺桿與缸筒內面間之速度差所產生之「剪切作用」，而且自螺桿前端之間隙沿螺桿之孔被輸送之期間，又被賦與自寬廣部位通過狹窄部位時所生之「伸長作用」。 In the circulation process, during the period from the end of the screw to the front end, the raw material is given a "shearing action" caused by the difference in speed between the rotating screw and the inner surface of the cylinder, and the gap from the front end of the screw During the period in which the hole of the screw is transported, it is given an "elongation effect" which occurs when the wide portion passes through the stenosis portion.

此時，於缸筒內，原料係成為反覆進行剪切流動與伸長流動之狀態。而且，因應反覆進行剪切流動與伸長流動 之時間亦即循環時間，生產出特定之混煉物。 At this time, in the cylinder, the raw material is in a state of repeatedly performing shear flow and elongation flow. Moreover, shear flow and elongation flow are repeated in response to The time, which is the cycle time, produces a specific mixture.

〔先前技術文獻〕 [Previous Technical Literature] 〔專利文獻〕 [Patent Document]

[專利文獻1]國際公開編號WO2010/061872號小册 [Patent Document 1] International Publication No. WO2010/061872

專利文獻1之裝置中，必須在將一定量之原料於缸筒內循環而予混煉，且將該混煉物自缸筒全部吐出後，才能進行下一次之混煉。換言之，於缸筒內之密閉空間將原料循環之期間，無法自該缸筒將混煉物連續吐出。因此，在提高混煉物之生產性之層面有其一定之界限。 In the apparatus of Patent Document 1, it is necessary to circulate and knead a predetermined amount of the raw material in the cylinder, and to discharge the kneaded material from the cylinder, the next kneading can be performed. In other words, during the period in which the sealed material in the cylinder is circulated, the kneaded material cannot be continuously discharged from the cylinder. Therefore, there is a certain limit in improving the productivity of the kneaded material.

此一情況下，準備複數台專利文獻1之裝置，對於循環處理之時刻造成差異，表面上可獲得與混煉物連續生產之情況等同量之混煉物。然而，如此一來將有必要另行耗費確保複數台裝置之設備投資或設置空間等所需之成本，結果是無法提高混煉物之生產性。 In this case, a plurality of apparatuses of Patent Document 1 are prepared, and the difference in the timing of the circulation treatment is obtained, and the kneaded material having the same amount as that of the continuous production of the kneaded material can be obtained on the surface. However, in this case, it is necessary to separately consume the cost required for securing the equipment investment or installation space of the plurality of devices, and as a result, the productivity of the kneaded product cannot be improved.

是以，本發明之目的係在提供一種可自缸筒將混煉物連續吐出，且可格外地提高混煉物之生產性之擠壓技術。 Therefore, an object of the present invention is to provide an extrusion technique which can continuously discharge a kneaded material from a cylinder tube and can particularly improve the productivity of the kneaded product.

又，為了獲得分散成奈米等級之混煉物，有必要提昇原料之混煉程度。為了實現相關要求，宜增加對於原料之剪切作用與伸長作用之賦與次數。為了增加該賦與次數，例如沿螺桿之軸向設置複數個賦與剪切作用之部分及賦與伸長作用之部分即可。然而，根據此一構成，會造成螺桿 之長型化。 Moreover, in order to obtain a kneaded product which is dispersed into a nanometer grade, it is necessary to increase the degree of kneading of the raw materials. In order to achieve the relevant requirements, it is desirable to increase the number of times of shearing and elongation of the raw material. In order to increase the number of times of application, for example, a plurality of portions imparting shearing action and portions for imparting elongation may be provided along the axial direction of the screw. However, according to this configuration, the screw is caused Longer.

再者，原料之混煉程度，可根據於上述賦與次數而預先設定。但是，根據專利文獻1之裝置，因在缸筒內原料循環之次數無法計數，故而無法預先設定上述賦與次數。 Further, the degree of kneading of the raw materials can be set in advance according to the number of times of the above-mentioned assignment. However, according to the apparatus of Patent Document 1, since the number of times of the material circulation in the cylinder cannot be counted, the number of times of the assignment cannot be set in advance.

是以，本發明之其他目的，係在提供一種可預先設定對於原料之剪切作用與伸長作用之賦與次數，無須將螺桿長型化下，即可格外地提昇原料之混煉程度之擠壓技術。 Therefore, another object of the present invention is to provide a predetermined number of times of shearing and elongation of the raw material, and it is possible to increase the degree of kneading of the raw material without lengthening the screw. Pressure technology.

為了達成如此之目的，本發明之擠壓機用螺桿，係將原料一邊混煉一邊輸送，其具備：螺桿本體，係具有沿原料之輸送方向之直線狀軸線且以該軸線為中心旋轉；複數個輸送部，係沿上述螺桿本體之軸向彼此隔著間隔而設置，伴隨著上述螺桿本體之旋轉而將原料沿上述螺桿本體之遍及周向之外周面於軸向輸送；複數個阻障部，係設於上述螺桿本體，於與上述輸送部相鄰之位置限制原料之輸送；及複數個通路，係設於上述螺桿本體之內部，具有入口及出口；上述入口，為了使其輸送受上述阻障部限制而壓力提高之原料流入，係開口於上述輸送部之上述螺桿本體之外周面；上述各通路，係使自上述入口流入之原料朝上述出口，沿與上述輸送部之輸送方向相同之方向流通；且上述出口，係於與形成有上述入口之上述輸送部偏離之位置，開口於上述螺桿本體之外周面。 In order to achieve such an object, the screw for an extruder according to the present invention is configured to convey a raw material while kneading, and includes: a screw body having a linear axis along a conveying direction of the raw material and rotating around the axis; The conveying portions are disposed at intervals in the axial direction of the screw body, and the raw materials are conveyed in the axial direction along the circumferential direction of the screw body along the rotation of the screw body; the plurality of barrier portions are The screw body is disposed at a position adjacent to the conveying portion to restrict the conveyance of the raw material; and the plurality of passages are disposed inside the screw body and have an inlet and an outlet; and the inlet is configured to be conveyed by the barrier The raw material inflow which is restricted by the pressure increase is formed on the outer peripheral surface of the screw main body which is opened in the conveying portion, and the respective passages are such that the raw material flowing in from the inlet is directed to the outlet in the same direction as the conveying direction of the conveying portion Circulating; and the outlet is at a position offset from the conveying portion on which the inlet is formed, and is open to the screw Outside peripheral surface.

本發明之擠壓機，其具備上述擠壓機用螺桿，利用該 螺桿混煉原料並連續生成其混煉物而予以擠出；具有：機筒，係具有供上述螺桿可旋轉地插通之缸筒；供給口，係設於上述機筒，對於上述缸筒內供給原料；及吐出口，係設於上述機筒，供混煉物擠出。 An extruder of the present invention, comprising the above-mentioned screw for an extruder, using the same The screw kneads the raw material and continuously produces the kneaded product and extrudes it; and has a barrel having a cylinder that is rotatably inserted through the screw; and a supply port that is disposed in the barrel for the cylinder The raw material is supplied; and the discharge port is provided in the barrel, and the kneaded product is extruded.

本發明之擠壓方法，係利用上述擠壓機用螺桿混煉原料並連續生成其混煉物而予以擠出；係將原料藉由上述螺桿本體之上述輸送部沿軸向輸送；藉由上述螺桿本體之上述阻障部限制原料之輸送，而提高施加於原料之壓力；上述壓力提高後之原料，流入上述螺桿本體之內部所設之上述通路，且於該通路內沿與上述輸送部之輸送方向同向地流通；使通過上述通路後之原料，於偏離形成有上述入口之上述輸送部的位置，返回上述螺桿本體之外周面。 The extrusion method of the present invention is carried out by kneading a raw material by a screw with the above-mentioned extruder and continuously producing a kneaded product thereof; and conveying the raw material in the axial direction by the conveying portion of the screw body; The barrier portion of the screw body restricts the conveyance of the raw material to increase the pressure applied to the raw material; the raw material having the increased pressure flows into the passage provided in the screw body, and is in the inner edge of the passage and the conveying portion The conveying direction flows in the same direction, and the raw material passing through the passage is returned to the outer peripheral surface of the screw main body at a position deviated from the conveying portion where the inlet is formed.

根據本發明，藉由設置成可自缸筒將混煉物連續吐出，可使混煉物之生產性格外地提高。 According to the present invention, the productivity of the kneaded product can be particularly improved by providing the kneaded material to be continuously discharged from the cylinder.

根據本發明，可預先設定對於原料之剪切作用與伸長作用之賦與次數，在無須使螺桿長型化之前提下，可格外地提昇原料之混煉程度。 According to the present invention, the number of times of the shearing action and the elongation action of the raw material can be set in advance, and the degree of kneading of the raw material can be particularly enhanced without lifting the screw before lengthening.

20‧‧‧擠壓機用螺桿 20‧‧‧Screws for extruders

20p‧‧‧螺桿本體 20p‧‧‧ screw body

36‧‧‧筒體 36‧‧‧Cylinder

37‧‧‧旋轉軸 37‧‧‧Rotary axis

38‧‧‧連結部 38‧‧‧Connecting Department

39‧‧‧支持部 39‧‧‧Support Department

40‧‧‧擋止部 40‧‧‧stops

41‧‧‧軸線 41‧‧‧ axis

42‧‧‧輸送部 42‧‧‧Transportation Department

43‧‧‧阻障部 43‧‧‧Disability Department

44‧‧‧吐出用輸送部 44‧‧‧Transporting department

45‧‧‧螺紋 45‧‧‧ thread

46‧‧‧螺紋 46‧‧‧ thread

47‧‧‧間隙 47‧‧‧ gap

48‧‧‧阻障用螺紋 48‧‧‧Shielding thread

64‧‧‧通路 64‧‧‧ pathway

65‧‧‧入口 65‧‧‧ entrance

66‧‧‧通路本體 66‧‧‧Path body

67‧‧‧出口 67‧‧‧Export

第1圖係概略表示本發明一個實施方式之連續式高剪切加工裝置的整體構成之立體圖。 Fig. 1 is a perspective view schematically showing the overall configuration of a continuous high-shear processing apparatus according to an embodiment of the present invention.

第2圖係第1擠壓機之縱剖視圖。 Fig. 2 is a longitudinal sectional view of the first extruder.

第3圖係概略表示組裝於第1擠壓機之2支螺桿的構成之立體圖。 Fig. 3 is a perspective view schematically showing the configuration of two screws assembled in the first extruder.

第4圖係第3擠壓機之横剖視圖。 Figure 4 is a cross-sectional view of the third extruder.

第5圖係表示出擠壓機用螺桿之外部構成的第2擠壓機之横剖視圖。 Fig. 5 is a transverse cross-sectional view showing a second extruder constructed by the outer portion of the screw for an extruder.

第6圖係表示出擠壓機用螺桿之內部構成的第2擠壓機之横剖視圖。 Fig. 6 is a transverse cross-sectional view showing the second extruder constructed inside the screw for an extruder.

第7圖係沿第6圖之F7-F7線之剖視圖。 Figure 7 is a cross-sectional view taken along line F7-F7 of Figure 6.

第8圖係表示擠壓機用螺桿之螺桿元件的構成例之立體圖。 Fig. 8 is a perspective view showing a configuration example of a screw element of a screw for an extruder.

第9圖係表示跨兩個筒體而形成之通路的構成之部分擴大剖視圖。 Fig. 9 is a partially enlarged cross-sectional view showing the configuration of a passage formed between two cylinders.

第10圖係模式性表示由擠壓機用螺桿所造成之原料之流動狀態之示意圖。 Fig. 10 is a schematic view showing the flow state of the raw material caused by the screw for the extruder.

第11圖係表示第2擠壓機之缸筒內之原料的流動狀態之部分擴大剖視圖。 Fig. 11 is a partially enlarged cross-sectional view showing the flow state of the raw material in the cylinder of the second extruder.

第12圖係概略表示本發明變化例之第2擠壓機的構成之剖視圖。 Fig. 12 is a cross-sectional view schematically showing the configuration of a second extruder of a modified example of the present invention.

第13圖係表示本發明變化例之擠壓機用螺桿的外部構成之剖視圖。 Figure 13 is a cross-sectional view showing the external configuration of a screw for an extruder according to a modification of the present invention.

第14圖係表示第13圖所示之阻障用圓環狀體之部分擴大立體圖。 Fig. 14 is a partially enlarged perspective view showing the barrier ring body shown in Fig. 13.

第15圖係概略表示本發明之變化例中，沿筒體之內周面設有通路之擠壓機用螺桿的構成之縱剖視圖。 Fig. 15 is a longitudinal cross-sectional view showing the configuration of a screw for an extruder having a passage along the inner circumferential surface of the cylindrical body in a modified example of the present invention.

第16圖係概略表示本發明之變化例中，沿旋轉軸之外周面設有通路之擠壓機用螺桿的構成之縱剖視圖。 Fig. 16 is a longitudinal cross-sectional view showing the configuration of a screw for an extruder having a passage along the outer circumferential surface of the rotating shaft in a variation of the present invention.

第17圖係概略表示本發明之變化例中，沿鍵之表面設有通路之擠壓機用螺桿的構成之縱剖視圖。 Fig. 17 is a longitudinal cross-sectional view showing the configuration of a screw for an extruder having a passage along the surface of a key in a variation of the present invention.

第18圖係概略表示本發明之變化例中，螺桿本體以1支軸狀部件形成之擠壓機用螺桿的構成之縱剖視圖。 Fig. 18 is a longitudinal cross-sectional view showing the configuration of a screw for an extruder in which a screw body is formed of one shaft member in a modified example of the present invention.

第19圖(A)係表示於本發明之變化例中，通路之入口部分的構成之擴大剖視圖，(B)係沿第19圖(A)之F19B-F19B線之剖視圖。 Fig. 19(A) is an enlarged cross-sectional view showing the configuration of the inlet portion of the passage in the modification of the present invention, and Fig. 19(B) is a cross-sectional view taken along the line F19B-F19B of Fig. 19(A).

第20圖(A)係表示於本發明之變化例中，通路之出口部分的構成之擴大剖視圖，(B)係沿第20圖(A)之F20B-F20B線之剖視圖。 Fig. 20(A) is an enlarged cross-sectional view showing the configuration of an outlet portion of a passage in a modification of the present invention, and Fig. 20(B) is a cross-sectional view taken along line F20B-F20B of Fig. 20(A).

第21圖(A)係表示於本發明之變化例中，通路之入口部分的構成之擴大剖視圖，(B)係沿第21圖(A)之F21B-F21B線之剖視圖。 Fig. 21(A) is an enlarged cross-sectional view showing the configuration of the inlet portion of the passage in the modification of the present invention, and (B) is a cross-sectional view taken along line F21B-F21B of Fig. 21(A).

第22圖(A)係表示於本發明之變化例中，通路之出口部分的構成之擴大剖視圖，(B)係沿第22圖(A)之F22B-F22B線之剖視圖。 Fig. 22(A) is an enlarged cross-sectional view showing the configuration of the outlet portion of the passage in the modification of the present invention, and Fig. 22(B) is a cross-sectional view taken along the line F22B-F22B of Fig. 22(A).

第23圖(A)係表示於本發明之變化例中，通路之入口部分的構成之擴大剖視圖，(B)係沿第23圖(A)之F23B-F23B線之剖視圖。 Fig. 23(A) is an enlarged cross-sectional view showing the configuration of the inlet portion of the passage in the modification of the present invention, and Fig. 23(B) is a cross-sectional view taken along the line F23B-F23B of Fig. 23(A).

第24圖(A)係表示於本發明之變化例中，通路之出口部分的構成之擴大剖視圖，(B)係沿第24圖(A)之F24B-F24B線之剖視圖。 Fig. 24(A) is an enlarged cross-sectional view showing the configuration of the outlet portion of the passage in the modification of the present invention, and Fig. 24(B) is a cross-sectional view taken along line F24B-F24B of Fig. 24(A).

以下，茲就本發明之一個實施方式，參照所附圖面說明之。 Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

第1圖中所示的是本實施方式之連續式高剪切加工裝置1之構成。高剪切加工裝置1係將第1擠壓機2、第2擠壓機3、與第3擠壓機4串聯連接而構成。又，第3擠壓機4並非為一定必要之裝置，可配合用途組裝於連續式高剪切加工裝置1中。 The configuration of the continuous high-shear processing apparatus 1 of the present embodiment is shown in Fig. 1. The high shear processing apparatus 1 is configured by connecting the first extruder 2, the second extruder 3, and the third extruder 4 in series. Further, the third extruder 4 is not necessarily a necessary device, and can be assembled in the continuous high-shear machining device 1 in accordance with the use.

第1擠壓機2，係藉由將材料5預備混煉而予熔融化，並將該時所生成之熔融狀態的材料5作為原料連續供給至第2擠壓機3。第2擠壓機3係對由第1擠壓機2連續供給之原料賦與剪切作用及伸長作用，並將其混煉物連續擠出。第3擠壓機4係將第2擠壓機3擠出之混煉物中所含之氣體成分吸引暨除去，並將該氣體成分被吸引暨除去之混煉物吐出至機外。 The first extruder 2 is preliminarily kneaded by kneading the material 5, and the material 5 in a molten state formed at this time is continuously supplied to the second extruder 3 as a raw material. The second extruder 3 imparts a shearing action and an elongation action to the raw material continuously supplied from the first extruder 2, and continuously extrudes the kneaded product. The third extruder 4 sucks and removes the gas component contained in the kneaded material extruded by the second extruder 3, and discharges the kneaded material in which the gas component is sucked and removed to the outside of the machine.

又，作為由第2擠壓機3所混煉之原料，不限於聚碳酸酯樹脂(PC)與聚甲基丙烯酸甲酯樹脂(PMMA)之熔融混合原料，於熔融狀態之熱可塑性樹脂中含有碳纖維之原料等各種之原料也可應用。 Moreover, the raw material kneaded by the second extruder 3 is not limited to the melt-mixed raw material of the polycarbonate resin (PC) and the polymethyl methacrylate resin (PMMA), and is contained in the molten thermoplastic resin. Various raw materials such as carbon fiber raw materials can also be used.

〔關於第1擠壓機2〕 [About the first extruder 2]

如第2圖所示，第1擠壓機2係以同向旋轉型之雙軸混煉機構成，備有：彼此嚙合之2支螺桿6a、6b、以及 可旋轉地收容此等2支螺桿6a、6b之機筒7。2支螺桿6a、6b係平行且筆直延伸地構成，可使其以彼此嚙合之狀態同向旋轉。機筒7備有：將彼此嚙合狀態之2支螺桿6a、6b可旋轉地收容之收容部8、及將自投入部9(參見第1圖)投入至收容部8之材料5加熱使其熔融之加熱器(圖未示)。 As shown in Fig. 2, the first extruder 2 is configured by a co-rotating type double-shaft kneading machine, and includes two screws 6a and 6b that mesh with each other. The barrels 7 of the two screws 6a, 6b are rotatably accommodated. The two screws 6a, 6b are formed in parallel and straightly extending so as to be rotatable in the same direction as each other. The barrel 7 is provided with a housing portion 8 in which the two screws 6a and 6b that are engaged with each other are rotatably accommodated, and a material 5 that is input from the input unit 9 (see Fig. 1) to the housing portion 8 is heated and melted. The heater (not shown).

如第3圖所示，2支螺桿6a、6b係可藉由令其等以彼此嚙合之狀態同向旋轉，而將投入之材料5(參見第1圖)輸送，並一面對該材料5進行預備混煉。彼此成嚙合狀態之2支螺桿6a、6b上，構成有饋送部10、混煉部11以及泵送部12。 As shown in Fig. 3, the two screws 6a, 6b can be conveyed in the same direction by being engaged with each other, and the material 5 (see Fig. 1) is fed, and the material 5 is Prepare for mixing. The feed screws 10, the kneading section 11, and the pumping section 12 are formed on the two screws 6a and 6b that are in meshing state with each other.

饋送部10、混煉部11以及泵送部12，於其中央部形成有鍵孔13。鍵孔13中***有與例如馬達等之旋轉裝置(圖未示)連結之鍵軸14。藉由使鍵軸14旋轉，可令饋送部10、混煉部11以及泵送部12旋轉。第2圖中，作為鍵孔13之一例所示的是於2支螺桿6a、6b中，形成於混煉部11之混煉盤19之鍵孔13。 The feed portion 10, the kneading portion 11, and the pumping portion 12 are formed with key holes 13 at the center portion thereof. A key shaft 14 coupled to a rotating device (not shown) such as a motor is inserted into the key hole 13. By rotating the key shaft 14, the feeding portion 10, the kneading portion 11, and the pumping portion 12 can be rotated. In the second drawing, as an example of the keyhole 13, the keyholes 13 formed in the kneading disc 19 of the kneading section 11 are formed in the two screws 6a and 6b.

根據如此之構成，藉由將2支螺桿6a、6b同向旋轉，自投入部9投入收容部8之材料5係由饋送部10輸送，於由混煉部11混煉後，再由泵送部12輸送，並連續供給於第2擠壓機3。 According to this configuration, by rotating the two screws 6a and 6b in the same direction, the material 5 that has been inserted into the accommodating portion 8 from the input unit 9 is transported by the feeding unit 10, and is kneaded by the kneading unit 11, and then pumped. The portion 12 is conveyed and continuously supplied to the second extruder 3.

饋送部10中，2支螺桿6a、6b上分別設有朝向材料5之輸送方向，與該螺桿6a、6b之旋轉方向為反向之螺紋狀扭轉之螺紋15。雙方之螺紋15係以相位偏移90°之 狀態下彼此嚙合，於此一狀態下藉由令2支螺桿6a、6b旋轉，可將投入之材料5輸送至混煉部11。 In the feeding portion 10, the two screws 6a, 6b are respectively provided with threads 15 which are oriented in the direction in which the material 5 is conveyed, and which are twisted in a direction opposite to the direction of rotation of the screws 6a, 6b. The thread 15 of both sides is phase shifted by 90° In this state, the two screws 6a and 6b are rotated, and the material 5 to be fed can be conveyed to the kneading section 11 in this state.

於泵送部12中，2支螺桿6a、6b上分別設有朝向材料5之輸送方向，與該螺桿6a、6b之旋轉方向為反向之螺紋狀扭轉之螺紋16。雙方之螺紋16係以相位偏移90°之狀態下彼此嚙合，於此一狀態下藉由令2支螺桿6a、6b旋轉，可將由混煉部11混煉過之材料5輸送。 In the pumping portion 12, the two screws 6a, 6b are respectively provided with threads 16 which are oriented in the direction in which the material 5 is conveyed, and which are twisted in a direction opposite to the direction of rotation of the screws 6a, 6b. The threads 16 of the both sides mesh with each other with a phase shift of 90°. In this state, the two screws 6a and 6b are rotated to transport the material 5 kneaded by the kneading unit 11.

混煉部11中，2支螺桿6a、6b上分別備有：第1混煉盤區域11a、第2混煉盤區域11b、及第3混煉盤區域11c。第1混煉盤區域11a中備有複數個混煉盤17，此等混煉盤17係以與饋送部10之螺紋15之螺紋方向一致之方式，與相鄰之混煉盤17被賦與相位差而構成。同樣地，第3混煉盤區域11c中備有複數個混煉盤18，此等混煉盤18係以與泵送部12之螺紋16之螺紋方向一致之方式，與相鄰混煉盤18被賦與相位差而構成。相對於此，第2混煉盤區域11b中備有複數個混煉盤19，此等混煉盤19係與相鄰混煉盤19成正交般地構成。 In the kneading section 11, each of the two screws 6a and 6b is provided with a first kneading disc region 11a, a second kneading disc region 11b, and a third kneading disc region 11c. The first kneading disc area 11a is provided with a plurality of kneading discs 17, and the kneading discs 17 are given to the adjacent kneading discs 17 in such a manner as to match the thread direction of the threads 15 of the feeding portion 10. It is composed of phase differences. Similarly, a plurality of kneading discs 18 are provided in the third kneading disc region 11c, and the kneading discs 18 are aligned with the threading direction of the threads 16 of the pumping portion 12, and adjacent kneading discs 18 It is composed of a phase difference. On the other hand, the second kneading disc region 11b is provided with a plurality of kneading discs 19, and the kneading discs 19 are configured to be orthogonal to the adjacent kneading discs 19.

根據如此般之第1擠壓機2，藉由將自投入部9投入收容部8之材料5加熱熔融並一面予以混合，可生成具有適於第2擠壓機3之混煉的流動性之原料。經熔融混合化之原料，係自該第1擠壓機2連續被擠出。 According to the first extruder 2, the material 5 introduced into the accommodating portion 8 from the input unit 9 is heated and melted and mixed, whereby fluidity suitable for kneading of the second extruder 3 can be produced. raw material. The melt-mixed raw material is continuously extruded from the first extruder 2.

〔關於第2擠壓機3〕 [About the second extruder 3]

如第1圖所示，第2擠壓機3係以單軸擠壓機構成， 其具備：1支擠壓機用螺桿20、及具有可供該螺桿20可旋轉地插通的缸筒21a(參見第5圖、第6圖)之機筒21。自第1擠壓機2連續擠出之原料，係經由通路部22而連續供給至第2擠壓機3。於第2擠壓機3中，原料被賦與剪切作用及伸長作用，藉而連續生成混煉物。生成之混煉物係經由通路部23連續被供給至第3擠壓機4。又，有關備有該螺桿20之第2擠壓機3之具體構成，將於下文詳細說明。 As shown in Fig. 1, the second extruder 3 is constituted by a single-axis extruder. It comprises: one screw 20 for an extruder, and a barrel 21 having a cylinder 21a (see Fig. 5 and Fig. 6) through which the screw 20 is rotatably inserted. The raw material continuously extruded from the first extruder 2 is continuously supplied to the second extruder 3 via the passage portion 22. In the second extruder 3, the raw material is subjected to shearing action and elongation, whereby the kneaded product is continuously produced. The produced kneaded material is continuously supplied to the third extruder 4 via the passage portion 23. Further, the specific configuration of the second extruder 3 provided with the screw 20 will be described in detail below.

〔關於第3擠壓機4〕 [About the third extruder 4]

如第4圖所示，第3擠壓機4係以單軸擠壓機構成，具備：筆直狀延伸之1支抽氣螺桿24、具有可旋轉地收容此抽氣螺桿24的收容部25a之機筒25、以及將此收容部25a內抽吸成負壓之真空泵26。 As shown in Fig. 4, the third extruder 4 is constituted by a single-axis extruder, and includes one suction screw 24 extending straight in a straight line and a housing portion 25a rotatably receiving the suction screw 24. The barrel 25 and a vacuum pump 26 that sucks the inside of the accommodating portion 25a into a negative pressure.

抽氣螺桿24上螺紋狀設有用以將自第2擠壓機3供給之混煉物沿收容部25a輸送之螺紋27。螺紋27係自抽氣螺桿24之基端朝向前端，與該抽氣螺桿24之旋轉方向成反向地扭轉。抽氣螺桿24係連結於例如馬達等之旋轉裝置(圖未示)。藉此，自第2擠壓機3被供給之混煉物，係伴隨著抽氣螺桿24之旋轉而經由收容部25a連續輸送。 The air suction screw 24 is provided with a thread 27 for threading the kneaded material supplied from the second extruder 3 along the accommodating portion 25a. The thread 27 is twisted in the opposite direction to the direction of rotation of the air extracting screw 24 from the base end of the air extracting screw 24 toward the front end. The air suction screw 24 is coupled to a rotating device (not shown) such as a motor. Thereby, the kneaded material supplied from the second extruder 3 is continuously conveyed via the accommodating portion 25a in accordance with the rotation of the suction screw 24.

另外，機筒25上設有連結於真空泵26之排氣口(vent-port)28，排氣口28係連結於貫通該機筒25而連通於收容部25a之連通孔25h。再者，機筒25上於對向 於抽氣螺桿24之前端的位置處，設有將收容部25a閉塞之頭部29，頭部29具有用以將脫泡完成之混煉物予以吐出之吐出口29a。 Further, the barrel 25 is provided with a vent-port 28 connected to the vacuum pump 26, and the exhaust port 28 is connected to a communication hole 25h that penetrates the barrel 25 and communicates with the accommodating portion 25a. Furthermore, the barrel 25 is opposite A head portion 29 that closes the accommodating portion 25a is provided at a position at the front end of the air suction screw 24, and the head portion 29 has a discharge port 29a for discharging the kneaded material obtained by defoaming.

根據如是般之第3擠壓機4，自第2擠壓機3供給之混煉物於藉由抽氣螺桿24經由收容部25a內而朝頭部29輸送之期間，於與排氣口28對向之位置處受到真空泵26之真空壓。藉此，含於該混煉物之氣體狀物質或其他之揮發成分等將會被吸引除去。經施以脫除氣體之混煉物，於自頭部29之吐出口29a吐出後，係被加工成因應各種用途之製品。 According to the third extruder 4, the kneaded material supplied from the second extruder 3 is conveyed toward the head portion 29 through the accommodating portion 25a via the suction screw 24, and is connected to the exhaust port 28. The vacuum pressure of the vacuum pump 26 is received at the opposite position. Thereby, the gaseous substance or other volatile components contained in the kneaded product are sucked and removed. The kneaded material from which the gas is removed is discharged from the discharge port 29a of the head portion 29, and is processed into a product for various uses.

其次，茲就本實施方式之第2擠壓機3之具體構成說明之。 Next, the specific configuration of the second extruder 3 of the present embodiment will be described.

〔第2擠壓機3之概要〕 [Summary of the second extruder 3]

如第5圖及第6圖所示，於第2擠壓機3中，機筒21係分割成複數個機筒元件30。各機筒元件30具有供擠壓機用螺桿20可旋轉地插通之圓筒狀貫通孔30h。此一情況下，藉由以各貫通孔30h同軸狀連續之方式將複數個機筒元件30一體結合，而構成具有一列缸筒21a之機筒21。又，圖面中作為其一例，係顯示相鄰機筒元件30由螺栓31相互結合成之機筒21。 As shown in FIGS. 5 and 6, in the second extruder 3, the barrel 21 is divided into a plurality of barrel elements 30. Each of the barrel elements 30 has a cylindrical through hole 30h through which the extruder screw 20 is rotatably inserted. In this case, the plurality of barrel elements 30 are integrally joined in such a manner that the through holes 30h are coaxially continuous, thereby forming the barrel 21 having the row of cylinders 21a. Further, as an example of the drawing, the barrel 21 in which the adjacent barrel elements 30 are joined to each other by the bolts 31 is displayed.

機筒21之中，位於其一端之機筒元件30上設有供給口32。供給口32係貫通該機筒元件30而連通於缸筒21a。自第1擠壓機2經由通路部22而連續供給之原料， 係經由供給口32連續地供給至缸筒21a。 Among the barrels 21, a supply port 32 is provided on the barrel member 30 at one end thereof. The supply port 32 passes through the barrel element 30 and communicates with the cylinder 21a. The raw material continuously supplied from the first extruder 2 via the passage portion 22, It is continuously supplied to the cylinder 21a via the supply port 32.

又，機筒21之中，於位在其另一端之機筒元件30上設有吐出口33。吐出口33係形成於以覆蓋該另一端之機筒元件30的開口端之方式結合之蓋體34。藉此，於缸筒21a內混煉之混煉物係經由吐出口33連續被擠出。 Further, in the barrel 21, a discharge port 33 is provided in the barrel member 30 at the other end. The discharge port 33 is formed in a lid body 34 that is coupled to cover the open end of the barrel member 30 at the other end. Thereby, the kneaded material kneaded in the cylinder 21a is continuously extruded through the discharge port 33.

此外，各機筒元件30上設有供冷卻水流過之冷卻水通路35、圖未示之加熱器以及溫度感測器等等。此一情況下，藉由控制加熱器之ON/OFF，可將機筒21加熱控制於預先設定之溫度，藉而將缸筒21a內之原料加熱。此時，於機筒21超過設定溫度之情況下，藉由於冷卻水通路35中流過冷卻水而冷卻機筒21藉而將其調整於預先設定之溫度，可將缸筒21a內之原料冷卻。 Further, each of the barrel members 30 is provided with a cooling water passage 35 through which cooling water flows, a heater not shown, a temperature sensor, and the like. In this case, by controlling the ON/OFF of the heater, the barrel 21 can be heated and controlled to a predetermined temperature, thereby heating the raw material in the cylinder 21a. At this time, when the cylinder 21 exceeds the set temperature, the cooling water is passed through the cooling water passage 35, and the cylinder 21 is cooled and adjusted to a predetermined temperature, whereby the raw material in the cylinder 21a can be cooled.

〔關於擠壓機用螺桿20〕 [About screw 20 for extruder]

如第5圖至第8圖所示，擠壓機用螺桿20具備螺桿本體20p。螺桿本體20p係由複數個圓筒狀之筒體36、及將此等筒體36支持之1支旋轉軸37所構成。又，本說明書中，螺桿本體20p(筒體36)之外周面36s，係指沿不包括該螺桿本體20p(筒體36)之長度方向之兩端面的周向之外周面。 As shown in Figs. 5 to 8, the extruder screw 20 is provided with a screw main body 20p. The screw main body 20p is composed of a plurality of cylindrical cylinders 36 and one rotating shaft 37 supported by the cylinders 36. In the present specification, the outer circumferential surface 36s of the screw main body 20p (the tubular body 36) means a circumferential outer circumferential surface that does not include both end faces of the screw main body 20p (the tubular body 36) in the longitudinal direction.

旋轉軸37係自其基端遍及前端作筆真狀延伸。又，於擠壓機用螺桿20可旋轉地插通於機筒21之缸筒21a內的狀態下，旋轉軸37之基端係定位於設有供給口32之機筒21的一端側，旋轉軸37之前端係定位於設有吐出口 33之機筒21之另一端側。 The rotating shaft 37 extends from the base end to the front end in a true manner. Further, in a state where the extruder screw 20 is rotatably inserted into the cylinder 21a of the barrel 21, the base end of the rotary shaft 37 is positioned at one end side of the barrel 21 provided with the supply port 32, and is rotated. The front end of the shaft 37 is positioned to have a spout The other end side of the barrel 21 of 33.

另一種可明瞭其配置之方式如下：於將擠壓機用螺桿20可旋轉地插通於機筒21之缸筒21a內之狀態下，該擠壓機用螺桿20之基端係定位於設有供給口32之機筒21之一端側，而擠壓機用螺桿20之前端係定位於設有吐出口33之機筒21之另一端側。 Another way of arranging the configuration is as follows: in a state in which the extruder screw 20 is rotatably inserted into the cylinder 21a of the barrel 21, the base end of the extruder screw 20 is positioned. One end side of the barrel 21 having the supply port 32, and the front end of the extruder screw 20 is positioned on the other end side of the barrel 21 having the discharge port 33.

旋轉軸37之基端處，設有彼此同軸狀之連結部38及擋止部40。連結部38係經由圖未示之耦合器而形成為可連結於例如馬達等之旋轉裝置。擋止部40在構成上具有較連結部38之外形輪廓為大之外形輪廓。 At the base end of the rotating shaft 37, a coupling portion 38 and a stopper portion 40 which are coaxial with each other are provided. The connecting portion 38 is formed to be coupled to a rotating device such as a motor via a coupler (not shown). The stop portion 40 is configured to have a larger outer contour than the outer portion 38.

自旋轉軸37之前端遍及擋止部40之端面的區域，設有具圓柱形狀之支持部39(參見第6圖)。支持部39在構成上具有較擋止部40之外形輪廓為小之外形輪廓。支持部39係自擋止部40之端面同軸狀延伸，其全長具有對應於機筒21之缸筒21a全長之長度。此一旋轉軸37於來自圖未示之旋轉裝置的旋轉力傳達至連結部38時，係以自基端遍及前端之直線狀軸線41為中心作旋轉。 A support portion 39 having a cylindrical shape is provided in a region from the front end of the rotating shaft 37 to the end surface of the stopper portion 40 (see Fig. 6). The support portion 39 is configured to have a smaller profile than the stop portion 40. The support portion 39 extends coaxially from the end surface of the stopper portion 40, and has a length corresponding to the entire length of the cylinder barrel 21a of the barrel 21. When the rotational force from the rotating device (not shown) is transmitted to the connecting portion 38, the rotating shaft 37 rotates around the linear axis 41 extending from the proximal end to the distal end.

又，複數個圓筒狀之筒體36在構成上係分別支持於旋轉軸37之支持部39。作為相關之支持構造之一例，支持部39於其外周面上設有一對鍵51。各鍵51係嵌於沿支持部39之外周面周向偏移180°位置所形成之一對溝部50內。各溝部50係以將支持部39之外周面沿軸向部分缺損化而形成。 Further, a plurality of cylindrical tubular bodies 36 are supported by the support portions 39 of the rotary shaft 37, respectively. As an example of the related support structure, the support portion 39 is provided with a pair of keys 51 on its outer peripheral surface. Each of the keys 51 is fitted into one of the pair of groove portions 50 formed at a position shifted by 180° in the circumferential direction of the outer peripheral surface of the support portion 39. Each of the groove portions 50 is formed by partially deforming the outer peripheral surface of the support portion 39 in the axial direction.

再者，各筒體36係構成為可沿其內周面將支持部39 同軸狀貫通。各筒體36之內周面上沿其周向偏移180°之位置處形成有鍵溝53。此等一對鍵溝53，係將該筒體36之內周面沿軸向部分缺損而形成。 Furthermore, each of the cylinders 36 is configured to be able to support the support portion 39 along the inner circumferential surface thereof. Coaxial through. A key groove 53 is formed at an inner circumferential surface of each of the cylindrical bodies 36 at a position shifted by 180° in the circumferential direction. The pair of key grooves 53 are formed by partially deforming the inner circumferential surface of the cylindrical body 36 in the axial direction.

此一情況下，係在將各鍵51與各鍵溝53位置對準下，於所有之筒體36之內周面將旋轉軸37之支持部39貫通之。而後，於支持部39之前端經由軸環54螺入固定螺釘55。此時，所有之筒體36係被夾持於前端軸環54與擋止部40之基端軸環56之間，藉由其夾持力而以彼此無間隙之方式保持於密接之狀態。 In this case, the support portions 39 of the rotary shaft 37 are penetrated by the inner peripheral surfaces of all the cylinders 36 by aligning the respective keys 51 with the respective key grooves 53. Then, the fixing screw 55 is screwed into the front end of the support portion 39 via the collar 54. At this time, all the cylinders 36 are sandwiched between the front end collar 54 and the base end collar 56 of the stopper portion 40, and are held in close contact with each other without a gap by the clamping force.

藉由上述支持構造，所有之筒體36將於支持部39上同軸狀結合，藉此，該各筒體36與旋轉軸37將一體組合。藉由各筒體36與旋轉軸37作一體式組合，螺桿本體20p乃構成為自基端遍及前端於軸向(長度方向)延伸之棒狀部件。 With the above-described support structure, all of the cylinders 36 are coaxially coupled to the support portion 39, whereby the respective cylinders 36 and the rotary shaft 37 are integrally combined. The respective barrels 36 and the rotating shaft 37 are integrally combined, and the screw body 20p is formed as a rod-shaped member extending from the base end in the axial direction (longitudinal direction).

此時，可將各筒體36與旋轉軸37一起以軸線41為中心旋轉，亦即可將螺桿本體20p以軸線41為中心旋轉。再者，螺桿本體20p之基端係與旋轉軸37之基端一致，且螺桿本體20p之前端係與旋轉軸37之前端一致。 At this time, each of the cylindrical bodies 36 can be rotated about the axis 41 together with the rotating shaft 37, and the screw main body 20p can be rotated about the axis 41. Further, the base end of the screw body 20p coincides with the base end of the rotating shaft 37, and the front end of the screw body 20p coincides with the front end of the rotating shaft 37.

於此一狀態下，各筒體36係成為規定螺桿本體20p之外徑D1(參見第7圖)之構成要素。具體言之，沿支持部39同軸狀結合之各筒體36，其外徑D1係設定成彼此相同。螺桿本體20p(各筒體36)之外徑D1係通過旋轉軸37之旋轉中心即軸線41所規定之直徑。 In this state, each of the tubular bodies 36 is a constituent element that defines the outer diameter D1 of the screw main body 20p (see Fig. 7). Specifically, each of the cylindrical bodies 36 coaxially joined along the support portion 39 has the outer diameter D1 set to be identical to each other. The outer diameter D1 of the screw main body 20p (each cylinder 36) is a diameter defined by the rotation center of the rotating shaft 37, that is, the axis 41.

藉此，乃構成螺桿本體20p(各筒體36)之外徑D1 為一定值之多段式螺桿20。多段式螺桿20可沿旋轉軸37(即支持部39)將複數個螺桿元件以自由之順序及組合保持。作為螺桿元件，例如可將至少形成有後述之螺紋45、46、48的一部分之筒體36作為1個螺桿元件規定之。 Thereby, the outer diameter D1 of the screw body 20p (each cylinder 36) is formed. A multi-stage screw 20 of a certain value. The multi-stage screw 20 can hold a plurality of screw elements in a free sequence and in combination along the rotating shaft 37 (i.e., the support portion 39). As the screw element, for example, a cylindrical body 36 in which at least a part of the threads 45, 46, and 48 to be described later is formed can be defined as one screw element.

如此，藉由將螺桿20多段化，例如，針對該螺桿20之規格作變更或調整、或是保養或維修時，可格外地提昇其便利性。 As described above, by multiplying the screw 20, for example, when the specifications of the screw 20 are changed or adjusted, or when maintenance or repair is performed, the convenience can be particularly enhanced.

又，於本實施方式中，作為將複數個筒體36與旋轉軸37止轉固定之構造，並不限於與上述般之鍵51與鍵溝53之組合相關者，代替於此，也可使用例如第2圖所示般之鍵構造。 Further, in the present embodiment, the structure in which the plurality of cylindrical bodies 36 and the rotating shaft 37 are rotationally fixed and fixed is not limited to the combination of the above-described combination of the key 51 and the key groove 53, and instead of this, it may be used. For example, the key structure shown in Fig. 2 is used.

再者，多段式之螺桿20於機筒21之缸筒21a內係以同軸狀收容。具體而言，將複數個螺桿元件沿旋轉軸37(支持部39)保持而成之螺桿本體20p，係可旋轉地收容於缸筒21a。於此一狀態下，於螺桿本體20p之外周面36s與缸筒21a之內面21s之間，乃形成用以輸送原料之輸送路徑63。輸送路徑63沿缸筒21a之徑向之剖視形狀為圓環形，且沿缸筒21a軸向延伸。 Further, the multi-stage screw 20 is housed coaxially in the cylinder 21a of the barrel 21. Specifically, the screw main body 20p in which a plurality of screw elements are held along the rotating shaft 37 (support portion 39) is rotatably housed in the cylinder tube 21a. In this state, a conveyance path 63 for conveying the raw material is formed between the outer circumferential surface 36s of the screw main body 20p and the inner surface 21s of the cylinder 21a. The conveying path 63 has a circular cross-sectional shape along the radial direction of the cylinder tube 21a, and extends in the axial direction of the cylinder tube 21a.

本實施方式中，螺桿本體20p上設有：輸送原料之複數個輸送部42、以及限制原料流動之複數個阻障部43。此等輸送部42及阻障部43係沿螺桿本體20p之軸向(長度方向)交替地並排配置。 In the present embodiment, the screw main body 20p is provided with a plurality of conveying portions 42 for conveying the raw materials, and a plurality of barrier portions 43 for restricting the flow of the raw materials. These conveying portions 42 and the barrier portions 43 are alternately arranged side by side in the axial direction (longitudinal direction) of the screw main body 20p.

亦即，對應於機筒21之一端的螺桿本體20p之基端 配置有輸送部42，自此一輸送部42，朝向螺桿本體20p之前端，阻障部43與輸送部42係交替地配置。又，與機筒21之另一端對應之螺桿本體20p之前端，配置有吐出用輸送部44。吐出用輸送部44在構成上係將於缸筒21a內被混煉之混煉物以與其他輸送部42之輸送方向同向的方向輸送。 That is, the base end of the screw body 20p corresponding to one end of the barrel 21 The transport unit 42 is disposed, and the barrier portion 43 and the transport portion 42 are alternately arranged from the transport portion 42 toward the front end of the screw body 20p. Further, a discharge conveying portion 44 is disposed at the front end of the screw main body 20p corresponding to the other end of the barrel 21. The kneading conveyance unit 44 conveys the kneaded material that has been kneaded in the cylinder 21a in the same direction as the conveyance direction of the other conveyance unit 42.

〔自擠壓機用螺桿20之基端朝前端將混煉物擠出之構成〕 [Construction of extruding the kneaded material from the base end of the screw 20 for the extruder toward the front end]

以下之說明中，螺桿本體20p之旋轉方向(左旋、右旋)係指自該螺桿本體20p之基端側觀察時之旋轉方向(左旋、右旋)。又，螺紋45、46、48之扭轉方向(順時鐘、反時鐘)係指自螺桿本體20p之基端側觀察時之該螺紋45、46、48之扭轉方向(順時鐘、反時鐘)。 In the following description, the direction of rotation (left-handed, right-handed) of the screw main body 20p refers to the direction of rotation (left-handed, right-handed) when viewed from the proximal end side of the screw main body 20p. Further, the twist directions (clockwise, counterclockwise) of the threads 45, 46, 48 refer to the twist directions (clockwise, counterclockwise) of the threads 45, 46, 48 when viewed from the base end side of the screw body 20p.

各輸送部42具有螺紋狀扭轉之螺紋45。螺紋45係自沿筒體36之周向的外周面36s朝輸送路徑63突出。螺紋45係作與螺桿本體20p之旋轉方向為反向之扭轉。又，吐出用輸送部44具有螺紋狀扭轉之螺紋46。螺紋46係自沿筒體36之周向的外周面36s朝輸送路徑63突出。螺紋46係作與螺桿本體20p之旋轉方向為反向之扭轉。 Each of the conveying portions 42 has a threaded twisted thread 45. The thread 45 protrudes from the outer peripheral surface 36s along the circumferential direction of the cylindrical body 36 toward the transport path 63. The thread 45 is twisted in a direction opposite to the direction of rotation of the screw body 20p. Further, the discharge conveying portion 44 has a threaded twisted thread 46. The thread 46 protrudes from the outer peripheral surface 36s along the circumferential direction of the cylindrical body 36 toward the transport path 63. The thread 46 is twisted in a direction opposite to the direction of rotation of the screw body 20p.

此處，若將螺桿本體20p左旋而將原料混煉之情況下，各輸送部42之螺紋45係作扭轉動作以自螺桿本體20p之基端朝前端輸送原料。亦即，螺紋45之扭轉方向係與右旋螺釘相同，設定成順時鐘方向。 Here, when the screw main body 20p is left-handed to knead the raw material, the screw 45 of each conveying portion 42 is twisted to convey the raw material from the base end of the screw main body 20p toward the tip end. That is, the twist direction of the thread 45 is the same as that of the right-hand screw, and is set to be clockwise.

再者，若將螺桿本體20p左旋而將原料混煉之情況下，吐出用輸送部44之螺紋46係作扭轉動作以自螺桿本體20p之基端朝前端輸送原料。亦即，螺紋46之扭轉方向係與右旋螺釘相同，設定成順時鐘方向。 When the screw main body 20p is left-handed to knead the raw material, the screw 46 of the discharge conveying unit 44 is twisted to convey the material from the base end of the screw main body 20p toward the tip end. That is, the twisting direction of the thread 46 is the same as that of the right-handed screw, and is set to be clockwise.

相對於此，若將螺桿本體20p右旋而將原料混煉之情況下，各輸送部42之螺紋45係作扭轉動作以自螺桿本體20p之基端朝前端輸送原料。亦即，螺紋45之扭轉方向係與左旋螺釘相同，設定成反時鐘方向。 On the other hand, when the screw main body 20p is right-handed and the raw material is kneaded, the thread 45 of each conveying part 42 is twisted to convey the raw material from the base end of the screw main body 20p toward the front end. That is, the twisting direction of the thread 45 is the same as that of the left-hand screw, and is set to the counterclockwise direction.

再者，若將螺桿本體20p右旋而將原料混煉之情況下，吐出用輸送部44之螺紋46係作扭轉動作以自螺桿本體20p之基端朝前端輸送原料。亦即，螺紋46之扭轉方向係與左旋螺釘相同，設定成反時鐘方向。 When the screw main body 20p is rotated to the right and the raw material is kneaded, the screw 46 of the discharge conveying unit 44 is twisted to convey the material from the base end of the screw main body 20p toward the tip end. That is, the twisting direction of the thread 46 is the same as that of the left-hand screw, and is set to the counterclockwise direction.

各阻障部43具有螺紋狀扭轉之螺紋48。螺紋48係自沿筒體36之周向的外周面36s朝輸送路徑63突出。螺紋48係與螺桿本體20p之旋轉方向同向地扭轉。 Each of the barrier portions 43 has a threaded twisted thread 48. The thread 48 protrudes from the outer peripheral surface 36s along the circumferential direction of the cylindrical body 36 toward the transport path 63. The thread 48 is twisted in the same direction as the direction of rotation of the screw body 20p.

此處，若將螺桿本體20p左旋而將原料混煉之情況下，各阻障部43之螺紋48係作扭轉動作以自螺桿本體20p之前端朝基端輸送原料。亦即，螺紋48之扭轉方向係與左旋螺釘相同，設定成反時鐘方向。 Here, when the screw main body 20p is left-handed to knead the raw material, the threads 48 of the respective barrier portions 43 are twisted to convey the raw material from the front end of the screw main body 20p toward the base end. That is, the twisting direction of the thread 48 is the same as that of the left-hand screw, and is set to the counterclockwise direction.

相對於此，若將螺桿本體20p右旋而將原料混煉之情況下，各阻障部43之螺紋48係作扭轉動作以自螺桿本體20p之前端朝基端輸送原料。亦即，螺紋48之扭轉方向係與右旋螺釘相同，設定成順時鐘方向。 On the other hand, when the screw main body 20p is right-handed and the raw material is kneaded, the threads 48 of the respective barrier portions 43 are twisted to convey the raw material from the front end of the screw main body 20p toward the base end. That is, the twist direction of the thread 48 is the same as that of the right-hand screw, and is set to be clockwise.

各阻障部43中，螺紋48之扭轉節距係設定成與上述 各輸送部42、44之螺紋45、46之扭轉節距相同，或是較其為小。再者，螺紋45、46、48之頂部與機筒21的缸筒21a之內面21s之間，確保有微小之間隙。 In each of the barrier portions 43, the torsion pitch of the threads 48 is set to be as described above. The twisting pitches of the threads 45, 46 of the respective conveying portions 42, 44 are the same or smaller. Further, a slight gap is ensured between the top of the threads 45, 46, 48 and the inner surface 21s of the cylinder 21a of the barrel 21.

此一情況下，各阻障部43之外徑部43s與缸筒21a之內面21s之間隙47(參見第11圖)宜設定於0.1mm以上且2mm以下之範圍內。更好的是，將該間隙47設定為0.1mm以上且0.7mm以下之範圍內。藉此，可確實地限制原料通過間隙47被輸送此一情事。 In this case, the gap 47 (see FIG. 11) between the outer diameter portion 43s of each of the barrier portions 43 and the inner surface 21s of the cylinder tube 21a is preferably set to be in the range of 0.1 mm or more and 2 mm or less. More preferably, the gap 47 is set to be in the range of 0.1 mm or more and 0.7 mm or less. Thereby, it is possible to surely restrict the fact that the raw material is transported through the gap 47.

又，於各阻障部43中，代替設置螺紋48，也可設置沿螺桿本體20p之外周面36s周向連續之阻障用圓環狀體57(參見第13圖、第14圖)。阻障用圓環狀體57具有以軸線41為中心沿周向同心圓狀連續之圓筒面57s。圓筒面57s係自沿筒體36之周向的外周面36s朝輸送路徑63突出。圓筒面57s與缸筒21a之內面21s之間隔，係設定為上述間隙47之範圍內。 Further, in each of the barrier portions 43, instead of providing the screw thread 48, a barrier-shaped annular body 57 that is continuous in the circumferential direction of the outer circumferential surface 36s of the screw main body 20p may be provided (see Fig. 13 and Fig. 14). The barrier annular body 57 has a cylindrical surface 57s that is concentrically continuous in the circumferential direction around the axis 41. The cylindrical surface 57s protrudes toward the transport path 63 from the outer peripheral surface 36s along the circumferential direction of the cylindrical body 36. The interval between the cylindrical surface 57s and the inner surface 21s of the cylinder 21a is set within the range of the gap 47 described above.

另一方面，沿螺桿本體20p之軸向之輸送部42、44的長度，可因應例如原料之種類、原料之混煉程度、每單位時間之混煉物之生產量等而適當設定。輸送部42、44係指至少於筒體36之外周面36s形成有螺紋45、46之區域，並未特定於螺紋45、46之起點與終點之間之區域。 On the other hand, the length of the conveying portions 42 and 44 along the axial direction of the screw main body 20p can be appropriately set depending on, for example, the type of the raw material, the degree of kneading of the raw materials, the production amount of the kneaded material per unit time, and the like. The conveying portions 42, 44 are regions where the threads 45, 46 are formed at least on the outer circumferential surface 36s of the cylindrical body 36, and are not specific to the region between the start point and the end point of the threads 45, 46.

亦即，筒體36之外周面36s中，螺紋45、46除外之區域，亦有可能被視為輸送部42、44。例如，與具有螺紋45、46之筒體36相鄰位置處配置有圓筒狀之間隔件或圓筒狀之軸環的情況下，該間隔件或軸環亦可能包含於輸 送部42、44。 That is, in the outer peripheral surface 36s of the cylindrical body 36, the regions excluding the threads 45 and 46 may be regarded as the conveying portions 42, 44. For example, in the case where a cylindrical spacer or a cylindrical collar is disposed adjacent to the cylinder 36 having the threads 45, 46, the spacer or collar may also be included in the transmission. Delivery units 42, 44.

又，沿螺桿本體20p之軸向之阻障部43之長度，可因應例如原料之種類、原料之混煉程度、每單位時間之混煉物之生產量等而適當設定。阻障部43之機能係將由輸送部42輸送之原料的流動予以阻擋。亦即，阻障部43係於原料之輸送方向之下游側與輸送部42相鄰且妨害由輸送部42送來之原料通過螺紋48之頂部(外徑部43s)與缸筒21a之內面21s間之間隙47。 Moreover, the length of the barrier portion 43 along the axial direction of the screw main body 20p can be appropriately set depending on, for example, the type of the raw material, the degree of kneading of the raw material, the production amount of the kneaded material per unit time, and the like. The function of the barrier portion 43 blocks the flow of the raw material transported by the transport portion 42. In other words, the barrier portion 43 is adjacent to the transport portion 42 on the downstream side in the transport direction of the raw material, and the raw material sent from the transport portion 42 is prevented from passing through the top (outer diameter portion 43s) of the screw 48 and the inner surface of the cylinder 21a. The gap between the 21s is 47.

上述螺桿20中，各螺紋45、46、48係自彼此具有相同外徑D1之複數個筒體36之外周面36s朝輸送路徑63突出。因此，沿各筒體36之周向之外周面36s，係規定該螺桿20之谷徑。螺桿20之谷徑係於螺桿20之全長保持為一定值。 In the screw 20 described above, each of the threads 45, 46, and 48 protrudes from the outer peripheral surface 36s of the plurality of cylinders 36 having the same outer diameter D1 toward the transport path 63. Therefore, the valley diameter of the screw 20 is defined along the circumferential outer circumferential surface 36s of each of the cylinders 36. The valley diameter of the screw 20 is maintained at a constant value over the entire length of the screw 20.

另，如第5圖至第8圖所示，螺桿本體20p其內部具有軸向延伸之複數個通路64。複數個通路64係沿螺桿本體20p之軸向及周向並排。圖面中作為其一例顯示的構成是，沿螺桿本體20p之周向等間隔配置之兩個通路64，係沿軸向等間隔並排。 Further, as shown in Figs. 5 to 8, the screw body 20p has a plurality of passages 64 extending in the axial direction. A plurality of passages 64 are arranged side by side in the axial direction and the circumferential direction of the screw body 20p. As an example of the drawing, the two passages 64 which are arranged at equal intervals in the circumferential direction of the screw main body 20p are arranged at equal intervals in the axial direction.

通路64係設於自螺桿20之旋轉中心即軸線41偏心之位置。亦即，通路64係自軸線41偏離。因此，通路64係伴隨著螺桿本體20p之旋轉而繞軸線41之周圍公轉。 The passage 64 is provided at a position eccentric from the rotation center of the screw 20, that is, the axis 41. That is, the passage 64 is offset from the axis 41. Therefore, the passage 64 revolves around the circumference of the axis 41 with the rotation of the screw body 20p.

針對通路64之形狀，只要是原料可流通即可，作為其剖視形狀可設定為例如圓形、矩形、橢圓形等。圖面中 作為其一例，顯示剖視為圓形之孔的通路64。此一情況下，該孔之內徑(口徑)宜設定於1mm以上且未達6mm。更好的是將該孔之內徑(口徑)設定為1mm以上且未達5mm。 The shape of the passage 64 may be any material as long as it can flow, and the cross-sectional shape thereof may be, for example, a circular shape, a rectangular shape, an elliptical shape or the like. In the picture As an example, a passage 64 that is cut into a circular hole is shown. In this case, the inner diameter (caliber) of the hole should be set to be 1 mm or more and less than 6 mm. More preferably, the inner diameter (caliber) of the hole is set to be 1 mm or more and less than 5 mm.

螺桿本體20p之內部中，輸送部42及阻障部43之筒體36具有界定孔即通路64之筒狀壁面52。亦即，通路64係僅由中空之空間所形成之孔。壁面52係將中空之通路64於周向連續包圍。藉此，通路64係以僅容許原料流通的中空之空間構成。換言之，通路64之內部之中，構成螺桿本體20p之其他構成要素一概不存在。此一情況下，壁面52於螺桿本體20p旋轉時，非以軸線41為中心自轉而是繞軸線41公轉。 In the interior of the screw body 20p, the tubular portion 36 of the conveying portion 42 and the barrier portion 43 has a cylindrical wall surface 52 defining a hole, that is, a passage 64. That is, the passage 64 is a hole formed only by a hollow space. The wall 52 surrounds the hollow passage 64 continuously in the circumferential direction. Thereby, the passage 64 is constituted by a hollow space that allows only the raw material to flow. In other words, among the inside of the passage 64, the other constituent elements constituting the screw main body 20p do not exist. In this case, when the wall surface 52 is rotated by the screw body 20p, it does not rotate about the axis 41 but revolves around the axis 41.

根據如此般之通路64，藉由各輸送部42經由輸送路徑63輸送之原料流通於該通路64時，對於該原料，可使自寬廣部位(輸送路徑63)通過狹窄部位(通路64)時所生之「伸長作用」有效地發揮。 According to the passage 64 as described above, when the raw material transported by the transport unit 42 via the transport path 63 flows through the passage 64, the raw material can be passed through the narrow portion (the passage 64) from the wide portion (the transport path 63). The "elongation effect" of the birth is effectively exerted.

以下，茲就上述通路64之具體構成說明之。 Hereinafter, the specific configuration of the above-described passage 64 will be described.

如第6圖及第9圖所示，本實施方式之擠壓機用螺桿20，其複數個輸送部42與複數個阻障部43係沿軸向(長度方向)交替並排之螺桿本體20p的內部，複數個通路64係沿軸向(長度方向)彼此隔著間隔設置。根據該相關之螺桿構造，可實現一種具備螺桿本體20p之螺桿20，該螺桿本體20p具有對於原料連續賦與剪切作用與伸長作用之機能。 As shown in FIGS. 6 and 9, the screw 20 for an extruder of the present embodiment has a plurality of conveying portions 42 and a plurality of barrier portions 43 alternately arranged in the axial direction (longitudinal direction) of the screw body 20p. Internally, a plurality of passages 64 are provided at intervals in the axial direction (longitudinal direction). According to the screw structure of the related art, a screw 20 having a screw body 20p having a function of continuously imparting shearing action and elongation to the raw material can be realized.

於此，上述螺桿構造中，若著眼於1個阻障部43與鄰接於該阻障部43兩側之2個輸送部42，1個通路64係跨阻障部43之筒體36與2個輸送部42之筒體36而設置。該相關構成在構造上可以整合之1個單元獲得了解。 Here, in the above-described screw structure, focusing on one barrier portion 43 and two transport portions 42 adjacent to both sides of the barrier portion 43, one passage 64 spans the tubular bodies 36 and 2 of the barrier portion 43. The cylindrical body 36 of the conveying portion 42 is provided. This correlation constitutes an understanding of the unit that can be integrated in construction.

本實施方式之螺桿本體20p，係由該單元於軸向(長度方向)複數個並排而構成。藉此，可於追求特定之原料流的情況下，實現通過一次的處所不會再次通過之單向通行型之螺桿構造。 The screw main body 20p of the present embodiment is configured by a plurality of parallel rows of the unit in the axial direction (longitudinal direction). Thereby, in the case of pursuing a specific material flow, it is possible to realize a one-way type screw structure that does not pass again through the space once.

換言之，上述之1個單元，可作為在機能上整合之1個模組而掌握。作為1個模組之機能，可設想的有例如對於原料賦與剪切作用之機能、對於原料賦與伸長作用之機能、利用阻障部43阻擋原料輸送之機能、利用阻障部43將壓力被提高之原料導往通路64之機能、及在緊鄰阻障部43之前形成原料之充滿率為100%之原料積留部R之機能等等。 In other words, one of the above units can be grasped as one module integrated on the function. As a function of one module, for example, a function of imparting a shearing action to a raw material, a function of imparting an elongation to a raw material, a function of blocking the conveyance of a raw material by the barrier portion 43, and a pressure by the barrier portion 43 are conceivable. The function of the raw material to be improved is guided to the passage 64, and the function of the raw material accumulation portion R in which the filling rate of the raw material is 100% immediately before the barrier portion 43 is formed.

再者，於上述螺桿構造中，通路64具有：入口65、出口67、將入口65與出口67間連通之通路本體66。入口65及出口67於上述1個單元中，係設於1個阻障部43之兩側。亦即，入口65係設置於通路本體66之一方側(螺桿本體20p之靠基端之部分)。出口67係設於通路本體66之另一方側(螺桿本體20p之靠前端之部分)。 Further, in the screw structure described above, the passage 64 has an inlet 65, an outlet 67, and a passage body 66 that communicates between the inlet 65 and the outlet 67. The inlet 65 and the outlet 67 are provided on one side of the one barrier portion 43 in the above-described one unit. That is, the inlet 65 is provided on one side of the passage body 66 (portion of the screw body 20p at the base end). The outlet 67 is provided on the other side of the passage body 66 (the portion of the front end of the screw body 20p).

具體而言，相對該阻障部43自螺桿本體20p之基端側鄰接之輸送部42中，入口65係開口於該輸送部42之 外周面36s。另一方面，相對該阻障部43自螺桿本體20p之前端側鄰接之輸送部42中，出口67係開口於該輸送部42之外周面36s。 Specifically, in the transport portion 42 adjacent to the proximal end side of the screw body 20p, the inlet portion 65 is opened to the transport portion 42. The outer peripheral surface is 36s. On the other hand, in the transport portion 42 in which the barrier portion 43 is adjacent to the front end side of the screw main body 20p, the outlet 67 is opened to the outer peripheral surface 36s of the transport portion 42.

此一情況下，入口65以及出口67之形成位置可於該輸送部42之範圍內自由設定。例如，可使入口65及出口67之雙方接近阻障部43，也可自該阻障部43隔開。又，也可使入口65及出口67之任一方與阻障部43接近，或是自該阻障部43隔開。圖面中顯示之一例的構成是，令入口65接近於阻障部43，令出口67與阻障部43遠離。 In this case, the formation positions of the inlet 65 and the outlet 67 can be freely set within the range of the conveying portion 42. For example, both the inlet 65 and the outlet 67 may be brought close to the barrier portion 43 or may be spaced apart from the barrier portion 43. Further, either one of the inlet 65 and the outlet 67 may be close to the barrier portion 43 or may be spaced apart from the barrier portion 43. One example shown in the drawing is such that the inlet 65 is close to the barrier portion 43 and the outlet 67 is separated from the barrier portion 43.

入口65係自筒體36(螺桿本體20p)之外周面36s徑向挖掘之穴。入口65例如可藉由利用鑽孔機之機械加工而形成。其結果為，入口65之底部65a成為由鑽孔機之前端被削挖成圓錐狀之傾斜面。換言之，圓錐狀之底部65a係朝螺桿本體20p之外周面36s形成逐漸展開之形狀之傾斜面。 The inlet 65 is a hole that is radially excavated from the outer peripheral surface 36s of the cylindrical body 36 (the screw body 20p). The inlet 65 can be formed, for example, by machining using a drill. As a result, the bottom portion 65a of the inlet 65 becomes an inclined surface which is cut into a conical shape by the front end of the drilling machine. In other words, the conical bottom portion 65a forms an inclined surface having a gradually expanding shape toward the outer peripheral surface 36s of the screw body 20p.

出口67係自筒體36(螺桿本體20p)之外周面36s徑向挖掘之穴。出口67例如可藉由利用鑽孔機之機械加工而形成。其結果為，出口67之底部67a成為由鑽孔機之前端被削挖成圓錐狀之傾斜面。換言之，圓錐狀之底部67a係朝螺桿本體20p之外周面36s形成逐漸展開之形狀之傾斜面。 The outlet 67 is a hole that is radially excavated from the outer peripheral surface 36s of the cylindrical body 36 (the screw body 20p). The outlet 67 can be formed, for example, by machining using a drilling machine. As a result, the bottom portion 67a of the outlet 67 becomes an inclined surface which is cut into a conical shape by the front end of the drilling machine. In other words, the conical bottom portion 67a forms an inclined surface having a gradually expanding shape toward the outer peripheral surface 36s of the screw body 20p.

本實施方式中，1個筒體36之外周面36s上，軸向排列有1個輸送部42與1個阻障部43(參見第8圖)。而且，藉由將該筒體36沿軸向並排，可構成複數個輸送部 42與複數個阻障部43沿軸向(長度方向)交替並排之螺桿本體20p。 In the present embodiment, one transport portion 42 and one barrier portion 43 are arranged in the axial direction on the outer peripheral surface 36s of one cylindrical body 36 (see Fig. 8). Moreover, by arranging the cylinders 36 in the axial direction, a plurality of conveying sections can be formed. 42 and a plurality of barrier portions 43 are alternately arranged in the axial direction (longitudinal direction) of the screw body 20p.

通路本體66係遍及彼此鄰接之兩個筒體36而形成。通路本體66係由第1及第2部分66a、66b所構成。第1部分66a係形成於一方之筒體36之內部。第2部分66b係形成於另一方筒體36之內部。 The passage body 66 is formed over the two cylinders 36 adjacent to each other. The passage body 66 is composed of the first and second portions 66a and 66b. The first portion 66a is formed inside one of the tubular bodies 36. The second portion 66b is formed inside the other tubular body 36.

一方之筒體36中，第1部分66a係沿與阻障部43對向之區域而形成。第1部分66a係沿軸線41平行延伸。第1部分66a之一端係於該筒體36之端面36a開口。另一方面，第1部分66a之另一端係於該筒體36之內部被閉塞。另外，第1部分66a之另一端係連通於上述入口65而連接。 In the one tubular body 36, the first portion 66a is formed along a region facing the barrier portion 43. The first portion 66a extends parallel along the axis 41. One end of the first portion 66a is open to the end face 36a of the cylindrical body 36. On the other hand, the other end of the first portion 66a is closed inside the cylindrical body 36. Further, the other end of the first portion 66a is connected to the inlet 65 to be connected.

另一方之筒體36中，第2部分66b係沿對向於輸送部42之區域而形成。第2部分66b係沿軸線41平行延伸。第2部分66b之一端係於該筒體36之端面36a開口。另一方面，第2部分66b之另一端係於該筒體36之內部被閉塞。另外，第2部分66b之另一端係連通於上述出口67而連接。 In the other tubular body 36, the second portion 66b is formed along a region opposed to the conveying portion 42. The second portion 66b extends parallel along the axis 41. One end of the second portion 66b is open to the end face 36a of the cylindrical body 36. On the other hand, the other end of the second portion 66b is closed inside the cylindrical body 36. Further, the other end of the second portion 66b is connected to the outlet 67 to be connected.

通路本體66可藉由將形成有第1部分66a之筒體36與形成有第2部分66b之筒體36軸向鎖緊，並將其諸個端面36a相互密接而形成。於此一狀態下，通路本體66係沿螺桿本體20p之軸向以在途中不分歧之方式連續成一直線狀延伸。而且，該通路本體66之兩側係連通於上述入口65及出口67而連接。 The passage body 66 can be formed by axially locking the cylindrical body 36 in which the first portion 66a is formed and the cylindrical body 36 in which the second portion 66b is formed, and by adhering the end faces 36a to each other. In this state, the passage body 66 continuously extends in a straight line along the axial direction of the screw body 20p so as not to be divergent in the way. Further, both sides of the passage body 66 are connected to the inlet 65 and the outlet 67 to be connected.

此一情況下，通路本體66之口徑可設定為較入口65及出口67之口徑為小，也可設定為相同之口徑。不管是任一情況，由該通路本體66之口徑所規定之通路剖面積，係設定為遠小於沿上述圓環形輸送路徑63之徑向之圓環剖面積。 In this case, the diameter of the passage body 66 can be set to be smaller than the diameter of the inlet 65 and the outlet 67, or can be set to the same diameter. In either case, the cross-sectional area of the passage defined by the diameter of the passage body 66 is set to be much smaller than the circular cross-sectional area along the radial direction of the circular transport path 63.

本實施方式中，可將形成有螺紋45、46、48之至少一部分之各筒體36，作為與各輸送部42、44或阻障部43對應之螺桿元件掌握。第8圖中，作為螺桿元件之一例，顯示的是1個輸送部42與1個阻障部43沿外周面36s並排之筒體36。 In the present embodiment, each of the cylindrical bodies 36 on which at least a part of the threads 45, 46, and 48 are formed can be grasped as a screw element corresponding to each of the conveying portions 42, 44 or the barrier portion 43. In Fig. 8, as an example of the screw element, a cylindrical body 36 in which one conveying portion 42 and one barrier portion 43 are arranged along the outer peripheral surface 36s is shown.

如此，螺桿20之螺桿本體20p可藉由於旋轉軸37(支持部39)之外周上依序配置作為螺桿元件之複數個筒體36而構成。因此，例如可因應原料之混煉程度進行輸送部42、44或阻障部43之更換以及重組，而且可使更換及重組時之作業容易地進行。 In this manner, the screw main body 20p of the screw 20 can be configured by sequentially arranging a plurality of cylindrical bodies 36 as screw elements on the outer circumference of the rotating shaft 37 (support portion 39). Therefore, for example, the replacement and reorganization of the conveying portions 42, 44 or the barrier portion 43 can be performed in accordance with the degree of kneading of the raw materials, and the work at the time of replacement and reorganization can be easily performed.

進而，藉由將作為螺桿元件之複數個筒體36於軸向鎖緊並相互密接，可形成各通路64之通路本體66，而且經由該通路本體66，自通路64之入口65以至出口67一體連通。因此，於螺桿本體20p形成通路64之際，對於與螺桿本體20p之全長相比長度充分短之各個筒體36，施加供設置通路64之加工即可。因此，形成通路64時之加工及處理容易。 Further, by enclosing the plurality of cylinders 36 as screw elements in the axial direction and in close contact with each other, the passage body 66 of each passage 64 can be formed, and through the passage body 66, from the inlet 65 of the passage 64 to the outlet 67 Connected. Therefore, when the passage portion 64 is formed in the screw main body 20p, the processing for providing the passage 64 may be applied to each of the cylindrical bodies 36 whose length is sufficiently shorter than the entire length of the screw main body 20p. Therefore, processing and handling when forming the via 64 are easy.

其次，茲說明利用具有如是構成之擠壓機用螺桿20將原料混煉之動作。於此動作說明中，係設想一面將擠壓 機用螺桿20反時鐘左旋，一面自螺桿本體20p之基端朝前端將混煉物擠壓而出之情況。此一情況下，對於具備擠壓機用螺桿20之第2擠壓機3，係自第1擠壓機2連續被供給原料。該原料於第1擠壓機2中，係將複數個材料預備混煉所生成之熔融狀態之原料。 Next, an operation of kneading a raw material by a screw 20 having an extruder having a configuration will be described. In this action description, it is assumed that one side will be squeezed The machine screw 20 is rotated left-handed counterclockwise, and the kneaded material is extruded from the base end of the screw main body 20p toward the front end. In this case, the second extruder 3 including the extruder screw 20 is continuously supplied with raw materials from the first extruder 2. In the first extruder 2, the raw material is a raw material in a molten state obtained by kneading a plurality of materials.

如第10圖及第11圖所示，供給至第2擠壓機3之原料，係自機筒21之供給口32(參見第5圖及第6圖)連續供給於螺桿本體20p之外周面36s。經供給之原料，係利用輸送部42之螺紋45自螺桿本體20p之基端朝前端於S1方向輸送。 As shown in Fig. 10 and Fig. 11, the raw material supplied to the second extruder 3 is continuously supplied to the outer peripheral surface of the screw body 20p from the supply port 32 of the cylinder 21 (see Figs. 5 and 6). 36s. The supplied raw material is conveyed from the base end of the screw main body 20p toward the front end in the S1 direction by the screw 45 of the conveying portion 42.

於S1方向輸送之期間，原料上係被賦與沿輸送路徑63旋轉之輸送部42的螺紋45與缸筒21a的內面21s之間之速度差所生之「剪切作用」，且被賦與伴隨著螺紋狀之螺紋45本身之旋轉的攪拌作用。藉此，對於該原料之奈米分散化獲得促進。 During the conveyance in the S1 direction, the raw material is imparted with a "shearing action" caused by the difference in speed between the thread 45 of the conveying portion 42 that rotates along the conveying path 63 and the inner surface 21s of the cylinder 21a, and is given Stirring with the rotation of the threaded thread 45 itself. Thereby, the nanodispersion of the raw material is promoted.

S1方向輸送之原料，其輸送係由阻障部43所限制。亦即，阻障部43之螺紋48係以將原料於S1方向之反向，自螺桿本體20p之前端朝基端輸送之方式作用。其結果為，該原料係因阻障部43而其流動受到阻擋。 The material transported in the S1 direction is restricted by the barrier portion 43. That is, the thread 48 of the barrier portion 43 acts to reverse the direction of the material in the S1 direction from the front end of the screw body 20p toward the base end. As a result, the raw material is blocked by the barrier portion 43.

此時，於輸送部42與阻障部43之邊界，原料之壓力增高。具體說明如下：第11圖中，輸送路徑63之中與螺桿本體20p之輸送部42對應之部位的原料之充滿率係以色調濃淡表示。亦即，於該輸送路徑63中，色調愈濃表示原料之充滿率愈高。由第11圖可知，與輸送部42對應 之輸送路徑63中，隨著接近阻障部43，原料之充滿率增高。於緊鄰阻障部43之前，原料之充滿率成為100%。 At this time, the pressure of the raw material is increased at the boundary between the conveying portion 42 and the barrier portion 43. Specifically, in the eleventh diagram, the filling rate of the raw material in the portion corresponding to the conveying portion 42 of the screw main body 20p among the conveying paths 63 is indicated by the hue. That is, in the conveyance path 63, the richer the hue, the higher the filling rate of the raw material. As can be seen from FIG. 11, it corresponds to the transport unit 42. In the conveyance path 63, as the barrier portion 43 is approached, the filling rate of the raw material is increased. Before the barrier portion 43 is in close proximity, the filling rate of the raw material becomes 100%.

因此，於緊鄰阻障部43之前，形成有原料之充滿率成為100%之「原料積留部R」。原料積留部R中，原料之流動受到阻擋，因此該原料之壓力上昇。壓力上昇之原料，係自開口於輸送部42(筒體36)之外周面36s之入口65連續地流入通路本體66，並於該通路本體66內以與S1方向同向之方式，自螺桿本體20p之基端朝向前端於S2方向流通。 Therefore, before the barrier portion 43 is formed, the "raw material accumulation portion R" having a filling rate of the raw material of 100% is formed. In the raw material storage portion R, the flow of the raw material is blocked, so the pressure of the raw material rises. The raw material whose pressure rises continuously flows into the passage body 66 from the inlet 65 which is opened to the outer peripheral surface 36s of the conveying portion 42 (the cylinder 36), and is in the same direction as the S1 direction from the screw body in the passage body 66. The base end of 20p flows toward the front end in the S2 direction.

如上所述，由通路本體66之口徑所規定之通路剖面積，係遠較沿缸筒21a之徑向之輸送路徑63之圓環剖面積為小。作為其他之明瞭其細節之說法為：依存於通路本體66之口徑之展開區域，係遠較圓環形狀之輸送路徑63之展開區域為小。因此，自入口65流入通路本體66時，原料將被急劇絞壓，因此該原料被賦與「伸長作用」。 As described above, the cross-sectional area of the passage defined by the diameter of the passage body 66 is much smaller than the circular cross-sectional area of the transport path 63 in the radial direction of the cylinder 21a. The other details are as follows: the unfolded area depending on the diameter of the passage body 66 is smaller than the expanded area of the circular-shaped conveying path 63. Therefore, when the inlet 65 flows into the passage body 66, the raw material is sharply smashed, so that the raw material is imparted with "elongation action".

進而，由於通路剖面積較圓環剖面積充分為小，因此原料積留部R中積留之原料不會消滅。亦即，積留於原料積留部R之原料，其一部分係連續地流入入口65。此一期間，新原料係由輸送部42之螺紋45朝阻障部43被送入。其結果為，原料積留部R之緊鄰阻障部43之前之充滿率經常維持於100%。此時，即使利用螺紋45之原料之輸送量發生若干變動，其變動狀態也會由原料積留部R中殘存之原料所吸收。藉此，可將原料連續安定地供給至通路本體66。因此，於該通路本體66中，對於原料可不中 斷地連續賦與伸長作用。 Further, since the cross-sectional area of the passage is sufficiently smaller than the area of the circular cross-section, the raw material accumulated in the raw material accumulating portion R is not destroyed. In other words, a part of the raw material accumulated in the raw material storage portion R flows continuously into the inlet 65. During this period, the new raw material is fed into the barrier portion 43 by the thread 45 of the conveying portion 42. As a result, the filling rate of the raw material accumulation portion R immediately before the barrier portion 43 is often maintained at 100%. At this time, even if the conveyance amount of the raw material by the screw 45 is slightly changed, the state of the fluctuation is absorbed by the raw material remaining in the raw material accumulation portion R. Thereby, the raw material can be continuously supplied to the passage body 66 in a stable manner. Therefore, in the passage body 66, the raw material may not be in the middle. Continuously imparting elongation to the ground.

通過通路本體66後之原料，係自出口67流出至螺桿本體20p之外周面36s。由於螺桿本體20p上於軸向交替並排有上述輸送部42與阻障部43，因此藉由上述般之一連串之剪切暨伸長動作之重複，缸筒21a內之原料將以重複作剪切流動與伸長流動之狀態下，自螺桿本體20p之基端朝前端連續地輸送。藉此，原料之混煉之程度獲得強化。 The raw material that has passed through the passage body 66 flows out from the outlet 67 to the outer peripheral surface 36s of the screw body 20p. Since the conveying portion 42 and the barrier portion 43 are alternately arranged in the axial direction of the screw body 20p, the material in the cylinder tube 21a is repeatedly sheared by the repetition of the series of shearing and elongating operations. In the state of the elongated flow, the base end of the screw body 20p is continuously conveyed toward the front end. Thereby, the degree of kneading of the raw materials is enhanced.

螺桿本體20p之前端係輸送經奈米等級混煉之混煉物。所輸送之混煉物，係由吐出用輸送部44之螺紋46於S1方向輸送後，自吐出口33(參見第5圖及第6圖)連續被擠出。 The front end of the screw body 20p is conveyed by a nano-kneaded kneaded material. The conveyed kneaded material is conveyed in the S1 direction by the screw 46 of the discharge conveying portion 44, and is continuously extruded from the discharge port 33 (see Figs. 5 and 6).

自第2擠壓機3之吐出口33被擠出之混煉物，係於第3擠壓機4中，於該混煉物中所含之氣體成分被吸引除去後，被吐出至機外。吐出之混煉物，例如係浸漬在蓄存於水槽內之冷卻水內而被強制冷卻。如此，獲得所期望之樹脂成型品。 The kneaded product extruded from the discharge port 33 of the second extruder 3 is attached to the third extruder 4, and the gas component contained in the kneaded product is sucked and removed, and then discharged to the outside of the machine. . The kneaded material to be discharged is for example immersed in cooling water stored in a water tank and is forcibly cooled. Thus, a desired resin molded article is obtained.

此處，茲就由上述剪切暨伸長動作混煉原料之情況，針對對於其混煉物所進行之高分散確認試驗之結果說明之。 Here, in the case where the raw material is kneaded by the above-described shearing and elongation operation, the results of the high dispersion confirmation test performed on the kneaded product will be described.

試驗時，係將聚碳酸酯樹脂(PC)及聚甲基丙烯酸甲酯樹脂(PMMA)之二種材料5供給至第1擠壓機2，藉由預備混煉而生成熔融狀態之材料5。而後，將該熔融狀態之材料5作為第2擠壓機3之原料，自第1擠壓機2連 續供給至第2擠壓機3。 In the test, two materials 5 of a polycarbonate resin (PC) and a polymethyl methacrylate resin (PMMA) were supplied to the first extruder 2, and a material 5 in a molten state was produced by preliminary kneading. Then, the material 5 in the molten state is used as the raw material of the second extruder 3, and is connected from the first extruder 2 The supply to the second extruder 3 is continued.

於該試驗中，將擠壓機用螺桿20構成為可重複上述剪切暨伸長動作8次。而且，擠壓機用螺桿20之規格係如下般之設定。亦即，將螺桿徑設為36mm，將螺桿有效長(L/D)設為16.7，將螺桿旋轉數設為2300rpm，將原料供給量設為10.0kg/h，並將機筒設定溫度設為240℃。 In this test, the extruder screw 20 was configured to repeat the above-described shearing and elongation operation eight times. Further, the specifications of the screw 20 for the extruder are set as follows. In other words, the screw diameter is 36 mm, the screw effective length (L/D) is 16.7, the screw rotation number is 2300 rpm, the raw material supply amount is 10.0 kg/h, and the barrel set temperature is set to 240 ° C.

根據該相關試驗，可連續地獲得目的之透明性混煉物。 According to this related test, the desired transparent kneaded material can be continuously obtained.

以上，根據本實施方式之螺桿20，藉由使剪切作用區域與伸長作用區域軸向交替連續，可在對原料賦與剪切作用及伸長作用下，連續生成混煉物。此一情況下，可自第1擠壓機2對於第2擠壓機3無滯留地連續供給原料。藉此，並非表面上之連續生產，而是可作混煉物之完全連續生產。 As described above, according to the screw 20 of the present embodiment, the shearing action region and the elongation acting region are alternately continuous in the axial direction, whereby the kneaded product can be continuously produced under the action of shearing and elongation of the raw material. In this case, the raw material can be continuously supplied from the first extruder 2 to the second extruder 3 without any detention. Thereby, it is not a continuous production on the surface, but a complete continuous production of the kneaded material.

其結果為，可一面將第1擠壓機2與第2擠壓機3之運轉條件相互建立關連，一面將各者設定為最適之運轉條件。例如，以第1擠壓機2將樹脂預備混煉之情況下，將螺桿旋轉數與先前同樣地設定於100rpm至300rpm。因此，樹脂之充分加熱與熔融、以及預備混煉將成為可能。此時，於第2擠壓機3中，可將螺桿20以600rpm至3000rpm之高速旋轉。因此，相對樹脂可交替有效地賦與剪切作用及伸長作用。 As a result, each of the operating conditions of the first extruder 2 and the second extruder 3 can be set to each other, and each of them can be set to an optimum operating condition. For example, when the resin is preliminarily kneaded by the first extruder 2, the number of screw rotations is set to 100 rpm to 300 rpm in the same manner as before. Therefore, sufficient heating and melting of the resin and preliminary kneading will become possible. At this time, in the second extruder 3, the screw 20 can be rotated at a high speed of 600 rpm to 3000 rpm. Therefore, the relative resin can alternately and effectively impart shearing action and elongation.

進而，本實施方式之螺桿20，於追求特定之原料流的情況下，具有可實現通過一次的處所不會再次通過之單 向通行型之螺桿構造。因此，於決定螺桿20之構造之階段，可預先設定對於原料之剪切作用及伸長作用之賦與次數。藉此，可在不將該螺桿20長型化下，增加對於原料之剪切作用與伸長作用之賦與次數及賦與時間。其結果為，可以相應於目的之混煉程度將原料混煉。 Further, in the case where a specific material flow is pursued, the screw 20 of the present embodiment has a single sheet that can be passed through once and does not pass again. Construction to a pass type screw. Therefore, at the stage of determining the structure of the screw 20, the number of times of the shearing action and the elongation action of the raw material can be set in advance. Thereby, the number of times of application and the time of the shearing and elongation of the raw material can be increased without lengthening the screw 20. As a result, the raw materials can be kneaded in accordance with the degree of kneading of the purpose.

再者，根據本實施方式，由於係通過一次的處所不會再次通過之單向通行型之螺桿構造，因此相對特定之原料流，不會混入於其前方或後方之混煉狀態不同之原料流。是以，可將原料均一地混煉。 Further, according to the present embodiment, since the one-way passage type screw structure that does not pass through once again passes through the space of one time, the material flow in which the kneading state is not mixed in front of or behind the specific material flow is not mixed. . Therefore, the raw materials can be uniformly kneaded.

另外，根據本實施方式，係將螺桿本體20p(各筒體36)之外徑D1設定於一定值，換言之，係將螺桿20之谷徑遍及該螺桿20之全長設定於一定值，藉此可實現將複數個螺桿元件以自由之順序及組合保持之多段式螺桿20。藉由將螺桿20多段化，例如針對該螺桿20之規格變更或調整、或是其保養或維修時，可格外地提高其便利性。 Further, according to the present embodiment, the outer diameter D1 of the screw main body 20p (each cylinder 36) is set to a constant value, in other words, the valley diameter of the screw 20 is set to a constant value over the entire length of the screw 20, whereby A multi-stage screw 20 that holds a plurality of screw elements in a free sequence and in combination is realized. When the screw 20 is multi-staged, for example, the specification or modification of the screw 20, or maintenance or repair thereof, the convenience can be particularly improved.

而且，藉由將螺桿20之谷徑遍及該螺桿20之全長設定為一定值，用以輸送原料之輸送路徑63遍及螺桿20之全長係形成相同之圓環形之剖視形狀，於對原料交替賦與剪切作用及伸長作用時，可依序圓滑地進行賦與，可實施均一之混煉。 Further, by setting the valley diameter of the screw 20 over the entire length of the screw 20 to a constant value, the conveying path 63 for conveying the raw material forms the same circular cross-sectional shape throughout the entire length of the screw 20, and alternates the raw materials. When the shearing action and the elongation action are imparted, the imparting can be smoothly performed in sequence, and uniform kneading can be performed.

再者，根據本實施方式，通路64(通路本體66)之剖面積係設定為遠較用以輸送原料的輸送路徑63之剖面積為小，藉此，相對通過該通路64(通路本體66)之原 料，可圓滿無礙地安定且高效率地賦與伸長作用。 Furthermore, according to the present embodiment, the cross-sectional area of the passage 64 (the passage body 66) is set to be smaller than the sectional area of the conveying path 63 for conveying the raw material, thereby passing through the passage 64 (the passage body 66). Original The material can be stably and efficiently and imparted with elongation.

又，本實施方式並不具有先前之單軸擠壓機的螺桿所具備之可塑化區域，且使用將輸送部42與阻障部43與通路64組合配置之螺桿20，因此可容易地操作第2擠壓機3。 Further, the present embodiment does not have the plasticized region provided in the screw of the conventional single-axis extruder, and the screw 20 in which the conveying portion 42 and the barrier portion 43 are combined with the passage 64 is used, so that the first operation can be easily performed. 2 extruder 3.

以上，係就本發明之一個實施方式所為之說明，然本發明不受該實施方式之限定，以下般之變化例亦包含於本發明之技術範圍內。 The above is an embodiment of the present invention, and the present invention is not limited to the embodiment, and the following modifications are also included in the technical scope of the present invention.

〔自擠壓機用螺桿20之前端朝基端擠壓混煉物之構成〕 [Composition of extrusion of the kneaded material from the front end of the screw 20 to the base end of the extruder]

以下之說明中，螺桿本體20p之旋轉方向(左旋、右旋)係指自該螺桿本體20p之基端側觀察之情況之旋轉方向(左旋、右旋)。又，螺紋60、61、62a、62b之扭轉方向(順時鐘、反時鐘)係指自螺桿本體20p之基端側觀察之情況下之該螺紋60、61、62a、62b之扭轉方向(順時鐘、反時鐘)。 In the following description, the direction of rotation (left-handed, right-handed) of the screw main body 20p refers to the direction of rotation (left-handed, right-handed) when viewed from the proximal end side of the screw main body 20p. Further, the twisting direction (clockwise, counterclockwise) of the threads 60, 61, 62a, 62b refers to the twisting direction of the threads 60, 61, 62a, 62b as viewed from the base end side of the screw body 20p (clockwise) , anti-clock).

第12圖中所示的是，本發明之變化例之第2擠壓機3、以及應用於該第2擠壓機3之本發明變化例之擠壓機用螺桿20的構成。 Fig. 12 is a view showing a configuration of a second extruder 3 according to a modification of the present invention and a screw 20 for an extruder according to a modification of the second extruder 3.

本變化例之第2擠壓機3中，供給口32係設於機筒21之另一端側，吐出口33係設於機筒21之一端側。又，擠壓機用螺桿20上，複數個輸送部58與複數個阻障部59a、59b、59c，係自螺桿本體20p之前端朝基端交替配置。 In the second extruder 3 of the present modification, the supply port 32 is provided on the other end side of the barrel 21, and the discharge port 33 is provided on one end side of the barrel 21. Further, in the extruder screw 20, a plurality of conveying portions 58 and a plurality of barrier portions 59a, 59b, 59c are alternately arranged from the front end of the screw main body 20p toward the base end.

又，於本變化例之擠壓機用螺桿20可旋轉地插通於機筒21之缸筒21a的狀態下，擠壓機用螺桿20及螺桿本體20p之基端係定位於設有吐出口33之機筒21之一端側，擠壓機用螺桿20及螺桿本體20p之前端係定位於設有供給口32之機筒21之另一端側。 Further, in the state in which the extruder screw 20 of the present modification is rotatably inserted into the cylinder tube 21a of the barrel 21, the base end of the extruder screw 20 and the screw body 20p is positioned to have a discharge port. One end side of the barrel 21 of the cylinder 33, the front end of the extruder screw 20 and the screw body 20p are positioned on the other end side of the barrel 21 provided with the supply port 32.

此一情況下，各輸送部58係構成為將自供給口32供給而來之原料朝吐出口33以S1方向輸送。基端阻障部59b與前端阻障部59c之間所配置之各阻障部59a，在構成上係限制各輸送部58所為之原料之輸送。又，基端阻障部59b係設於螺桿本體20p之基端，將由與該基端阻障部59b鄰接之輸送部58輸送而來之混煉物限制成朝向吐出口33。另一方面，前端阻障部59c係設於螺桿本體20p之前端，將由供給口32所供給之原料限制成朝向輸送方向S1。 In this case, each of the transport units 58 is configured to transport the raw material supplied from the supply port 32 to the discharge port 33 in the S1 direction. Each of the barrier portions 59a disposed between the proximal end barrier portion 59b and the distal end barrier portion 59c restricts the transport of the raw material of each of the transport portions 58 in a configuration. Further, the proximal end barrier portion 59b is provided at the proximal end of the screw body 20p, and the kneaded material conveyed by the transport portion 58 adjacent to the proximal end barrier portion 59b is restricted to face the discharge port 33. On the other hand, the distal end barrier portion 59c is provided at the front end of the screw main body 20p, and the raw material supplied from the supply port 32 is restricted to face the transport direction S1.

各輸送部58上，設有沿螺桿本體20p之外周面36s螺紋狀扭轉之螺紋60，該各螺紋60係自螺桿本體20p之基端朝前端與該螺桿本體20p之旋轉方向同向地扭轉。 Each of the conveying portions 58 is provided with a thread 60 which is threadedly twisted along the outer peripheral surface 36s of the screw main body 20p, and the respective threads 60 are twisted in the same direction from the base end of the screw main body 20p toward the front end in the direction of rotation of the screw main body 20p.

第12圖中所示的是，將螺桿本體20p左旋而將原料混煉之情況的構成。此一情況下，螺紋60之扭轉方向係與左旋螺釘相同設定為反時鐘方向，以自螺桿本體20p之前端朝基端輸送原料。又，將螺桿本體20p右旋而據以將原料混煉之情況下，將螺紋60之扭轉方向設定為與上述左旋之情況反向即可。 Fig. 12 shows a configuration in which the screw main body 20p is left-handed to knead the raw material. In this case, the twisting direction of the thread 60 is set to the counterclockwise direction in the same manner as the left-hand screw, and the raw material is conveyed from the front end of the screw body 20p toward the base end. Further, when the screw main body 20p is rotated to the right and the raw material is kneaded, the twist direction of the screw 60 may be set to be opposite to the case of the left-handed rotation.

再者，於各阻障部59a、59b、59c中，可設置沿螺桿 本體20p之外周面36s周向連續之阻障用圓環狀體57(參見第13圖及第14圖)，或是設置沿螺桿本體20p之外周面36s螺紋狀扭轉之阻障用螺紋61a、61b、61c(參見第12圖)。 Furthermore, in each of the barrier portions 59a, 59b, 59c, a screw can be provided along the screw The outer peripheral surface 36p has a circumferentially continuous ring-shaped annular body 57 (see FIGS. 13 and 14), or a barrier thread 61a which is threadedly twisted along the outer peripheral surface 36s of the screw body 20p, 61b, 61c (see Figure 12).

於設置阻障用螺紋61a、61b、61c之情況下，配置於螺桿本體20p之基端的基端阻障部59b上，自螺桿本體20p之基端朝向前端設有與該螺桿本體20p之旋轉方向為反向扭轉之阻障用螺紋61b。另一方面，配置於螺桿本體20p之前端之前端阻障部59c上，自螺桿本體20p之基端朝向前端設有與該螺桿本體20p之旋轉方向為同向扭轉之阻障用螺紋61c。再者，此等兩個阻障部59b、59c之間所設之各阻障部59a上，自螺桿本體20p之基端朝向前端，設有與該螺桿本體20p之旋轉方向為反向扭轉之阻障用螺紋61a。 When the barrier threads 61a, 61b, and 61c are provided, they are disposed on the proximal end barrier portion 59b of the proximal end of the screw body 20p, and the rotation direction of the screw body 20p is provided from the base end of the screw body 20p toward the distal end. The thread 61b is a barrier for reverse twisting. On the other hand, the front end barrier portion 59c is disposed on the front end of the screw main body 20p, and a barrier thread 61c that is twisted in the same direction as the rotation direction of the screw main body 20p is provided from the base end of the screw main body 20p toward the distal end. Further, each of the barrier portions 59a provided between the two barrier portions 59b and 59c is provided with a reverse twist from the base end of the screw body 20p toward the distal end. Barrier thread 61a.

此處，於將螺桿本體20p左旋而據以將原料混煉之情況下，前端阻障部59c之阻障用螺紋61c的扭轉方向，自螺桿本體20p之基端朝向前端，與左旋螺釘相同係設定於反時鐘方向。另一方面，除此之外之各阻障部59a、59b之阻障用螺紋61a、61b的扭轉方向，自螺桿本體20p之基端朝向前端，係與右旋螺釘相同，設定為順時鐘方向。又，將螺桿本體20p右旋而據以混煉原料之情況下，各阻障用螺紋61a、61b、61c之扭轉方向設定成與上述左旋之情況反向即可。 Here, when the screw main body 20p is left-handed and the raw material is kneaded, the twisting direction of the barrier thread 61c of the distal end barrier portion 59c is from the base end of the screw main body 20p toward the front end, and is the same as the left-hand screw. Set in the counterclockwise direction. On the other hand, the twist directions of the barrier threads 61a and 61b of the respective barrier portions 59a and 59b are the same as the right-hand screw from the base end of the screw body 20p toward the front end, and are set to be clockwise. . Further, when the screw main body 20p is rotated rightward and the raw material is kneaded, the twisting directions of the respective barrier threads 61a, 61b, and 61c may be set to be opposite to the case of the left-handed rotation.

又，有關除此以外之構成(例如，通路64之構 成)，可基於上述「自擠壓機用螺桿20之基端朝前端擠壓混煉物之構成」之細節而設定，因此省略其說明。 Also, regarding other configurations (for example, the configuration of the path 64) In the above, the above description can be made based on the details of "the configuration in which the kneading material is pressed toward the tip end from the base end of the screw 20 for the extruder", and therefore the description thereof will be omitted.

其次，茲就利用具有如此構成之擠壓機用螺桿20混煉原料之動作進行說明。於此動作說明中，係設想一面將擠壓機用螺桿20反時鐘方向左旋，並一面自螺桿本體20p之前端朝向基端擠壓混煉物之情況。 Next, an operation of kneading a raw material by the screw 20 for an extruder having such a configuration will be described. In the description of the operation, it is assumed that the extruder screw 20 is rotated leftward in the counterclockwise direction, and the kneaded material is pressed from the front end of the screw main body 20p toward the base end.

如第12圖所示，自機筒21之供給口32連續供給至螺桿本體20p之外周面36s的原料，係藉由輸送部58之螺紋60自螺桿本體20p之前端朝基端以S1方向輸送。 As shown in Fig. 12, the raw material supplied from the supply port 32 of the barrel 21 to the outer peripheral surface 36s of the screw main body 20p is conveyed in the S1 direction from the front end of the screw main body 20p toward the base end by the screw 60 of the conveying portion 58.

於以S1方向輸送之期間，原料上係被賦與因沿輸送路徑63旋轉之輸送部58的螺紋60與缸筒21a的內面21s之間之速度差所生之「剪切作用」，且被賦與伴隨著螺紋狀之螺紋60本身之旋轉之攪拌作用。藉此，對於該原料之奈米分散化獲得促進。 During the conveyance in the S1 direction, the raw material is imparted with a "shearing action" caused by the difference in speed between the thread 60 of the conveying portion 58 that rotates along the conveying path 63 and the inner surface 21s of the cylinder 21a, and The agitation is accompanied by the rotation of the threaded thread 60 itself. Thereby, the nanodispersion of the raw material is promoted.

沿輸送路徑63於S1方向輸送之原料，其輸送係由阻障部59a所限制。亦即，阻障部59a之螺紋61a係作扭轉動作以將原料以與S1方向為相反之方向自螺桿本體20p之基端朝前端輸送。其結果為，該原料係因阻障部59a其流動受到阻擋。 The material transported in the S1 direction along the transport path 63 is transported by the barrier portion 59a. That is, the thread 61a of the barrier portion 59a is twisted to transport the material from the base end of the screw body 20p toward the front end in the opposite direction to the S1 direction. As a result, the raw material is blocked by the flow of the barrier portion 59a.

因原料之流動受到阻擋，加諸該原料之壓力增高。特別是如圖未示般，本變化例亦如同上述實施方式，於緊鄰阻障部59a之前，原料之充滿率成為100%，且該原料之壓力上昇。壓力上昇之原料，係自入口65連續地流入通路本體66，且經由該通路本體66內，以與S1方向同向 地自螺桿本體20p之前端朝向基端於S2方向流通。於以S2方向流通之期間，原料上係被賦與上述之「伸長作用」。 As the flow of the raw material is blocked, the pressure applied to the raw material is increased. In particular, as shown in the above, the present modification is similar to the above-described embodiment, and the filling rate of the raw material is 100% immediately before the barrier portion 59a, and the pressure of the raw material rises. The material whose pressure rises continuously flows into the passage body 66 from the inlet 65, and passes through the passage body 66 in the same direction as the S1 direction. The ground flows from the front end of the screw body 20p toward the base end in the S2 direction. During the flow in the S2 direction, the above-mentioned "elongation action" is imparted to the raw material.

通過通路本體66後之原料，係自出口67流出至螺桿本體20p之外周面36s。螺桿本體20p上，上述輸送部58與阻障部59a係於軸向交替並排，因此藉由上述般之一連串之剪切暨伸長動作之重複，缸筒21a內之原料係於重複作剪切流動伸長流動之狀態下，自螺桿本體20p之前端朝向基端連續地輸送。藉此，原料之混煉之程度獲得強化。 The raw material that has passed through the passage body 66 flows out from the outlet 67 to the outer peripheral surface 36s of the screw body 20p. In the screw main body 20p, the conveying portion 58 and the barrier portion 59a are alternately arranged in the axial direction. Therefore, by repeating the series of shearing and elongating operations, the raw material in the cylinder 21a is repeatedly subjected to shear flow. In the state of the elongated flow, the front end of the screw body 20p is continuously conveyed toward the base end. Thereby, the degree of kneading of the raw materials is enhanced.

而後，自鄰接於基端阻障部59b輸送部58之出口67，經奈米等級混煉之混煉物流出。流出之混煉物由該輸送部58之螺紋60於S1方向被輸送後，於其輸送被基端阻障部59b限制下，自吐出口33連續被擠出。 Then, from the outlet 67 adjacent to the conveying portion 58 of the proximal end barrier portion 59b, the kneading is carried out by kneading at a nanometer level. The kneaded material that has flowed out is conveyed in the S1 direction by the screw 60 of the conveying portion 58, and is conveyed by the base end barrier portion 59b, and is continuously extruded from the discharge port 33.

又，本變化例之第2擠壓機3及擠壓機用螺桿20之效果，係與上述之一個實施方式相同，故省略其說明。 Further, the effects of the second extruder 3 and the extruder screw 20 of the present modification are the same as those of the above-described one embodiment, and thus the description thereof will be omitted.

〔其他之變化例〕 [Other variations]

上述之一個實施方式中，係設想將通路64(具體而言，通路本體66)構成於螺桿本體20p(筒體36)之內部之情況，但代替於此，也可沿構成螺桿本體20p之各筒體36之內周面將旋轉軸37之支持部39貫通時，於各筒體36與旋轉軸37之邊界部分形成通路64(通路本體66)。又，作為本變化例之構成，第15圖至第18圖中，顯示有與第7圖對應之部分之構成。 In the above-described embodiment, it is assumed that the passage 64 (specifically, the passage body 66) is formed inside the screw body 20p (the cylinder 36), but instead of the screw body 20p, When the inner peripheral surface of the cylindrical body 36 penetrates the support portion 39 of the rotary shaft 37, a passage 64 (a passage main body 66) is formed at a boundary portion between each of the cylindrical bodies 36 and the rotary shaft 37. Further, as a configuration of the present modification, in the fifteenth to eighteenth drawings, the configuration of the portion corresponding to the seventh embodiment is shown.

第15圖所示之通路64，係由將筒體36之內周面之一部分沿軸向凹入成凹狀之壁面52a所構成。此一情況下，藉由於筒體36之內周面貫通以旋轉軸37(支持部39)，可界定由壁面52a與支持部39之外周面所圍成之通路64。 The passage 64 shown in Fig. 15 is constituted by a wall surface 52a in which one of the inner circumferential surfaces of the cylindrical body 36 is recessed in the axial direction. In this case, since the inner peripheral surface of the cylindrical body 36 penetrates the rotating shaft 37 (support portion 39), the passage 64 surrounded by the outer peripheral surface of the wall surface 52a and the support portion 39 can be defined.

第16圖所示之通路64，係由將旋轉軸37(支持部39)之外周面之一部分沿軸向凹入成凹狀之壁面52b所構成。此一情況下，藉由於筒體36之內周面貫通以旋轉軸37(支持部39)，可界定由壁面52b與筒體36之內周面所圍成之通路64。 The passage 64 shown in Fig. 16 is constituted by a wall surface 52b in which a part of the outer peripheral surface of the rotating shaft 37 (support portion 39) is recessed in the axial direction. In this case, since the inner peripheral surface of the cylindrical body 36 penetrates the rotating shaft 37 (support portion 39), the passage 64 surrounded by the inner surface of the wall surface 52b and the cylindrical body 36 can be defined.

第17圖中所示之通路64，係由將鍵51之外周面之一部沿軸向凹入成凹狀之壁面52c所構成。此一情況下，藉由於筒體36之內周面貫通以旋轉軸37(支持部39)，可界定由壁面52c與鍵溝53之溝底面所圍成之通路64。 The passage 64 shown in Fig. 17 is constituted by a wall surface 52c which recesses one of the outer peripheral surfaces of the key 51 in a concave shape in the axial direction. In this case, since the inner peripheral surface of the cylindrical body 36 penetrates the rotating shaft 37 (support portion 39), the passage 64 surrounded by the wall surface 52c and the groove bottom surface of the key groove 53 can be defined.

不管是任一通路64中，只憑藉將露出至外部之部分凹狀加工，即可形成壁面52a、52b、52c，因此形成作業可容易地進行。此一情況下，作為凹狀之壁面52a、52b、52c的形狀，例如可應用半圓形、三角形、橢圓形、矩形等各種之形狀。 In any of the passages 64, the wall surfaces 52a, 52b, and 52c can be formed only by the concave processing which is exposed to the outside, so that the forming operation can be easily performed. In this case, as the shape of the concave wall faces 52a, 52b, and 52c, for example, various shapes such as a semicircle, a triangle, an ellipse, and a rectangle can be applied.

又，上述之一個實施方式中，係將螺桿本體20p由複數個筒體36與旋轉軸37構成，但代替於此，如第18圖所示，也可以筆直之1支軸狀部件20t構成螺桿本體20p。此一情況下，係於該實心的螺桿本體20p之外周面設置上述輸送部或阻障部，於該螺桿本體20p之內部設置 上述通路64。又，圖面中作為其一例，顯示出設於相對軸線41為偏心之位置，由筒狀之壁面52d所界定之一對通路64，由此可知各通路64之配置不受限定。 Further, in the above-described embodiment, the screw main body 20p is composed of a plurality of cylindrical bodies 36 and a rotating shaft 37. Alternatively, as shown in Fig. 18, a straight shaft member 20t may be used to constitute the screw. Body 20p. In this case, the conveying portion or the blocking portion is provided on the outer circumferential surface of the solid screw body 20p, and is disposed inside the screw body 20p. The above path 64. Further, as an example of the drawing, it is shown that the passage 64 is defined by the cylindrical wall surface 52d at a position where the opposing axis 41 is eccentric, and it is understood that the arrangement of the respective passages 64 is not limited.

又，於上述之一個實施方式中，係設想兩端完全閉塞之通路64，但代替於此，也可應用兩端可開放之通路64。此相關通路64可應用下述般之形成方法。亦即，預先形成軸向貫通螺桿本體20p之通路構成部。其次，沿著該一連串之通路構成部，將複數個閉塞體以彼此隔著間隔之方式拔出自如地***。藉此，可以相鄰閉塞體形成兩端可開放之通路構成部。又，藉由將通路構成部之兩側於螺桿本體20p之外周面36s開口，可形成本變化例之通路64。 Further, in the above-described one embodiment, the passage 64 in which both ends are completely closed is assumed, but instead of this, the passage 64 which is openable at both ends may be applied. This correlation path 64 can be applied in the following manner. That is, the passage forming portion that penetrates the screw main body 20p in the axial direction is formed in advance. Next, along the series of passage forming portions, a plurality of closing bodies are inserted and removed at intervals. Thereby, the adjacent blocking body can form a passage forming portion that can be opened at both ends. Further, the passage 64 of the present modification can be formed by opening both sides of the passage forming portion to the outer peripheral surface 36s of the screw main body 20p.

上述一個實施方式中，作為第2擠壓機3，係設想採用搭載有1支擠壓機用螺桿20之單軸擠壓機，但代替於此，也可將第2擠壓機3以搭載有2支擠壓機用螺桿20之雙軸擠壓機構成。 In the above-described one embodiment, a single-axis extruder in which one screw 20 for an extruder is mounted is used as the second extruder 3, but instead of this, the second extruder 3 may be mounted. There are two extruders which are constructed by a twin-shaft extruder of a screw 20.

另外，於上述一個實施方式中，第6圖及第9圖中係顯示通路本體66之兩側於自入口65及出口67之底部65a、67a偏離之位置連接於該入口65及出口67之通路64。然而，通路本體66與入口65及出口67之連接關係，不受上述一個實施方式之限定，以下所述般之連接關係亦包含於本發明之技術範圍內。 Further, in the above-described one embodiment, FIGS. 6 and 9 show that the both sides of the passage body 66 are connected to the inlet 65 and the outlet 67 at positions offset from the bottoms 65a, 67a of the inlet 65 and the outlet 67. 64. However, the connection relationship between the passage body 66 and the inlet 65 and the outlet 67 is not limited to the above-described one embodiment, and the connection relationship as described below is also included in the technical scope of the present invention.

第19圖至第24圖中，作為其一例係顯示通路本體66之兩側連接於入口65及出口67之底部65a、67a之通 路64。具體而言，通路本體66之一方側，亦即上述第1部分66a之另一端係連接於入口65之底部65a。再者，通路本體66之另一方側，亦即上述第2部分66b之另一端係連接於出口67之底部67a。 In Figs. 19 to 24, as an example, the sides of the passage body 66 are connected to the bottoms 65a, 67a of the inlet 65 and the outlet 67. Road 64. Specifically, one side of the passage body 66, that is, the other end of the first portion 66a is connected to the bottom 65a of the inlet 65. Further, the other side of the passage body 66, that is, the other end of the second portion 66b is connected to the bottom 67a of the outlet 67.

第19圖(A)、(B)及第20圖(A)、(B)中顯示第1變化例之通路64。於該通路64中，入口65之底部65a上連接有通路本體66之一方側(第1部分66a之另一端)之端面。底部65a上形成有與通路本體66(第1部分66a)連通之1個開口65b。另一方面，出口67之底部67a上連接有通路本體66之另一方側(第2部分66b之另一端)之端面。底部67a上形成有與通路本體66(第2部分66b)連通之1個開口67b。 In the 19th (A), (B) and 20th (A) and (B), the path 64 of the first modification is shown. In the passage 64, an end surface of one side of the passage body 66 (the other end of the first portion 66a) is connected to the bottom portion 65a of the inlet 65. One opening 65b that communicates with the passage body 66 (first portion 66a) is formed in the bottom portion 65a. On the other hand, the end surface 67a of the outlet 67 is connected to the end surface of the other side (the other end of the second portion 66b) of the passage body 66. An opening 67b communicating with the passage body 66 (second portion 66b) is formed in the bottom portion 67a.

入口65之1個開口65b，係形成於與朝螺桿本體20p之外周面36s成逐漸展開之形狀的底部65a對向之區域。另一方面，出口67之1個開口67b，係形成於與朝螺桿本體20p之外周面36s成逐漸展開之形狀的底部67a對向之區域。 One opening 65b of the inlet 65 is formed in a region opposed to the bottom portion 65a which is gradually expanded toward the outer peripheral surface 36s of the screw main body 20p. On the other hand, one opening 67b of the outlet 67 is formed in a region opposed to the bottom portion 67a which is gradually expanded toward the outer peripheral surface 36s of the screw main body 20p.

此一情況下，流入於入口65之原料，係沿底部65a之傾斜朝開口65b被引導。其結果為，原料係在不滯留於該入口65內之情形下全部連續圓滑地流入通路本體66。通過通路本體66後之原料，而後流入於出口67。流入於出口67之原料，係沿底部67a之傾斜朝螺桿本體20p之外周面36s被引導。其結果為，原料係於不在該出口67內滯留之情形下，全部連續圓滑地流出至螺桿本體20p之 外周面36s。 In this case, the raw material flowing into the inlet 65 is guided toward the opening 65b along the inclination of the bottom portion 65a. As a result, all of the raw materials flow smoothly into the passage body 66 without being retained in the inlet 65. The material passing through the passage body 66 flows into the outlet 67. The raw material flowing into the outlet 67 is guided toward the outer peripheral surface 36s of the screw body 20p along the inclination of the bottom portion 67a. As a result, all of the raw materials are continuously and smoothly flowed out to the screw body 20p without being retained in the outlet 67. The outer peripheral surface is 36s.

藉此，可避免於通路64內原料局部地滯留，且對於通過該通路64之原料，無遺漏且圓滿地連續賦與伸長作用。 Thereby, it is possible to avoid the local retention of the raw material in the passage 64, and to continuously extend the elongation effect to the raw material passing through the passage 64 without any omission.

第21圖(A)、(B)及第22圖(A)、(B)係顯示第2變化例之通路64。於該通路64中，入口65之底部65a上，連接有偏靠通路本體66之一方側(第1部分66a之另一端)之端面66s的部分，亦即端面66s之近前之部分。底部65a上形成有與通路本體66(第1部分66a)連通之兩個開口65b。另一方面，出口67之底部67a上，連接有偏靠通路本體66之另一方側(第2部分66b之另一端)之端面66s的部分，亦即端面66s之近前之部分。底部67a上形成有與通路本體66(第2部分66b)連通之兩個開口67b。 Fig. 21 (A), (B) and Fig. 22 (A) and (B) show the path 64 of the second modification. In the passage 64, a portion of the bottom portion 65a of the inlet 65 is connected to the end surface 66s of one side of the passage body 66 (the other end of the first portion 66a), that is, a portion immediately before the end surface 66s. Two openings 65b communicating with the passage body 66 (first portion 66a) are formed in the bottom portion 65a. On the other hand, the bottom portion 67a of the outlet 67 is connected to a portion of the other end side (the other end of the second portion 66b) of the passage body 66, that is, a portion immediately before the end surface 66s. Two openings 67b communicating with the passage body 66 (second portion 66b) are formed in the bottom portion 67a.

入口65之兩個開口65b，係形成於與朝螺桿本體20p之外周面36s成逐漸展開之形狀的底部65a對向之區域。另一方面，出口67之兩個開口67b，係形成於與朝螺桿本體20p之外周面36s成逐漸展開之形狀的底部67a對向之區域。又，第2變化例之通路64之作用及效果，係與上述第1變化例之通路64相同，因此省略其說明。 The two openings 65b of the inlet 65 are formed in a region opposed to the bottom portion 65a which is gradually expanded toward the outer peripheral surface 36s of the screw body 20p. On the other hand, the two openings 67b of the outlet 67 are formed in a region opposed to the bottom portion 67a which is gradually expanded toward the outer peripheral surface 36s of the screw body 20p. Further, the action and effect of the passage 64 of the second modification are the same as those of the passage 64 of the first modification, and therefore the description thereof will be omitted.

於上述一個實施方式及變化例中，入口65及出口67之開口方向，係設想為與軸線41正交之方向，但不受此限定。例如，如第23圖(A)、(B)及第24圖(A)、(B)所示，入口65及出口67之開口方向，也可設定為 與軸線41交叉之方向(虛線所示方向)。此一情況下，係自通路本體之兩側於複數個方向開口，藉此，可設置複數個入口65、65-1及複數個出口67、67-1。 In the above-described one embodiment and modifications, the opening directions of the inlet 65 and the outlet 67 are assumed to be orthogonal to the axis 41, but are not limited thereto. For example, as shown in Figs. 23(A), (B) and Figs. 24(A) and (B), the opening directions of the inlet 65 and the outlet 67 may be set to The direction intersecting the axis 41 (the direction indicated by the dashed line). In this case, the two sides of the path body are opened in a plurality of directions, whereby a plurality of inlets 65, 65-1 and a plurality of outlets 67, 67-1 can be provided.

再者，有關入口65，宜將其設成較螺桿本體20p之外周面36s為凹入之構成。藉此，可使原料更容易流入於入口65。 Further, it is preferable that the inlet 65 is configured to be recessed from the outer peripheral surface 36s of the screw body 20p. Thereby, the raw material can be more easily flowed into the inlet 65.

另外，於上述實施方式及變化例中，係設想具備與軸線41平行之通路本體66的通路64，但不受此限定，具備與軸線41交叉之通路本體66的通路64亦包含於本發明之技術範圍內。例如，藉由免除出口67，可令一方側與入口65連接之通路本體66的另一方側直接開口於螺桿本體20p(筒體36)之外周面36s。此一情況下，乃構成一方側朝另一方側具有上坡坡度之通路本體66。 Further, in the above-described embodiments and modifications, the passage 64 including the passage body 66 parallel to the axis 41 is assumed. However, the passage 64 including the passage body 66 that intersects the axis 41 is also included in the present invention. Within the technical scope. For example, by excluding the outlet 67, the other side of the passage body 66 to which the one side is connected to the inlet 65 can be directly opened to the outer peripheral surface 36s of the screw body 20p (the cylinder 36). In this case, the passage body 66 having an upward slope on one side and the other side is formed.

根據該相關構成，自入口65流入通路本體66之原料，係受到螺桿本體20p旋轉時之離心作用，藉此可更進一步圓滑地流通經過通路本體66，並流出至螺桿本體20p(筒體36)之外周面36s。此時，相對原料可更有效率地連續地賦與伸長作用。其結果為，可進一步強化原料之混煉程度。 According to this configuration, the raw material that flows into the passage body 66 from the inlet 65 is subjected to the centrifugal action when the screw main body 20p rotates, thereby allowing the smooth flow through the passage main body 66 and out to the screw main body 20p (the cylinder 36). Outside the perimeter 36s. At this time, the elongation effect can be continuously imparted more efficiently with respect to the raw material. As a result, the degree of kneading of the raw materials can be further enhanced.

3‧‧‧第2擠壓機 3‧‧‧2nd extruder

20‧‧‧擠壓機用螺桿 20‧‧‧Screws for extruders

20p‧‧‧螺桿本體 20p‧‧‧ screw body

21‧‧‧機筒 21‧‧‧ barrel

21a‧‧‧缸筒 21a‧‧‧Cylinder

21s‧‧‧內面 21s‧‧‧ inside

30‧‧‧機筒元件 30‧‧‧ barrel components

30h‧‧‧圓筒狀貫通孔 30h‧‧‧Cylindrical through hole

31‧‧‧螺栓 31‧‧‧ bolt

32‧‧‧供給口 32‧‧‧ supply port

33‧‧‧吐出口 33‧‧‧Exporting

34‧‧‧蓋體 34‧‧‧ Cover

35‧‧‧冷卻水通路 35‧‧‧Cooling water access

36‧‧‧筒體 36‧‧‧Cylinder

36s‧‧‧外周面 36s‧‧‧ outer perimeter

37‧‧‧旋轉軸 37‧‧‧Rotary axis

38‧‧‧連結部 38‧‧‧Connecting Department

39‧‧‧支持部 39‧‧‧Support Department

40‧‧‧擋止部 40‧‧‧stops

41‧‧‧軸線 41‧‧‧ axis

42‧‧‧輸送部 42‧‧‧Transportation Department

43‧‧‧阻障部 43‧‧‧Disability Department

44‧‧‧吐出用輸送部 44‧‧‧Transporting department

45‧‧‧螺紋 45‧‧‧ thread

46‧‧‧螺紋 46‧‧‧ thread

47‧‧‧間隙 47‧‧‧ gap

48‧‧‧阻障用螺紋 48‧‧‧Shielding thread

54‧‧‧軸環 54‧‧‧ collar

55‧‧‧固定螺釘 55‧‧‧ fixing screws

56‧‧‧基端軸環 56‧‧‧ base end collar

63‧‧‧輸送路徑 63‧‧‧Transportation path

64‧‧‧通路 64‧‧‧ pathway

65‧‧‧入口 65‧‧‧ entrance

66‧‧‧通路本體 66‧‧‧Path body

67‧‧‧出口 67‧‧‧Export

Claims (12)

一種擠壓機用螺桿，係將原料一邊混煉一邊輸送，其具備：螺桿本體，係具有沿原料之輸送方向之直線狀軸線，以該軸線為中心旋轉；複數個輸送部，係沿上述螺桿本體之軸向彼此隔著間隔而設置，伴隨著上述螺桿本體之旋轉而將原料沿上述螺桿本體之偏及周向之外周面於軸向輸送；複數個阻障部，係設於上述螺桿本體，於與上述輸送部相鄰之位置限制原料之輸送；及複數個通路，係設於上述螺桿本體之內部，具有入口及出口；上述入口，為了使其輸送受上述阻障部限制而壓力提高之原料流入，係開口於上述輸送部之上述螺桿本體之外周面；上述各通路，係使自上述入口流入之原料朝上述出口，沿與上述輸送部之輸送方向相同之方向流通；且上述出口，係於與形成有上述入口之上述輸送部偏離之位置，開口於上述螺桿本體之外周面。 A screw for an extruder, which conveys a raw material while kneading, and has a screw body having a linear axis along a conveying direction of the raw material and rotating around the axis; a plurality of conveying portions along the screw The axial direction of the main body is spaced apart from each other, and the raw material is conveyed in the axial direction along the circumferential direction of the screw main body along the rotation of the screw main body; the plurality of barrier portions are provided on the screw body. a position adjacent to the conveying unit to restrict the conveyance of the raw material; and a plurality of passages provided inside the screw body, having an inlet and an outlet; and the inlet for conveying the pressure increased by the barrier portion The inflow is formed in the outer peripheral surface of the screw main body of the conveying unit; the passages are such that the raw material flowing in from the inlet flows toward the outlet in the same direction as the conveying direction of the conveying unit; and the outlet is The outer peripheral surface of the screw body is opened at a position deviated from the conveying portion on which the inlet is formed. 如申請專利範圍第1項之擠壓機用螺桿，其中，上述各通路之口徑，係設定為與該各通路之上述入口之口徑相同，或是較其為小。 The screw for an extruder according to the first aspect of the invention, wherein the diameter of each of the passages is set to be the same as or smaller than the diameter of the inlet of each of the passages. 如申請專利範圍第1項之擠壓機用螺桿，其中，上述各通路之口徑係設定為1mm以上且未達6mm。 The screw for an extruder according to the first aspect of the invention, wherein the diameter of each of the passages is set to be 1 mm or more and less than 6 mm. 如申請專利範圍第1至3項中任一項之擠壓機用螺桿，其中，上述螺桿本體係自連結於旋轉裝置之基端遍及前端沿軸向延伸；在上述輸送部，設有沿上述螺桿本體之外周面螺紋狀扭轉之螺紋；上述螺紋，自上述螺桿本體之基端朝向前端，係與從上述基端側觀察之情況之該螺桿本體的旋轉方向成反向扭轉。 The screw for an extruder according to any one of claims 1 to 3, wherein the screw system extends from the base end of the rotating device to the front end in the axial direction; a screw threaded to the outer peripheral surface of the screw body; the thread from the base end of the screw body toward the front end is reversely twisted in a direction of rotation of the screw body as viewed from the base end side. 如申請專利範圍第1至3項中任一項之擠壓機用螺桿，其中，上述螺桿本體係自連結於旋轉裝置之基端遍及前端沿軸向延伸；在上述輸送部，設有沿上述螺桿本體之外周面螺紋狀扭轉之螺紋；上述螺紋，自上述螺桿本體之基端朝向前端，係與從上述基端側觀察之情況之該螺桿本體的旋轉方向成同向扭轉。 The screw for an extruder according to any one of claims 1 to 3, wherein the screw system extends from the base end of the rotating device to the front end in the axial direction; a screw threaded to the outer peripheral surface of the screw body; the thread is twisted in the same direction from the base end of the screw body toward the front end in the same direction as the rotation direction of the screw body as viewed from the base end side. 如申請專利範圍第4項之擠壓機用螺桿，其中，在上述各阻障部，設有沿上述螺桿本體之外周面於周向連續之阻障用圓環狀體；上述阻障用圓環狀體構成為，具有以軸線為中心沿周向呈同心圓狀連續之圓筒面。 The screw for an extruder according to claim 4, wherein each of the barrier portions is provided with a ring-shaped annular body that is continuous in the circumferential direction along the outer circumferential surface of the screw body; The annular body is configured to have a cylindrical surface that is concentrically continuous in the circumferential direction around the axis. 如申請專利範圍第4項之擠壓機用螺桿，其中，在上述各阻障部，設有沿上述螺桿本體之外周面螺紋狀扭轉之阻障用螺紋； 上述阻障用螺紋，自上述螺桿本體之基端朝向前端，係與從上述基端側觀察之情況之該螺桿本體的旋轉方向成同向扭轉。 The screw for an extruder according to the fourth aspect of the invention, wherein the barrier portion is provided with a thread for twisting along a circumferential surface of the screw body; The barrier thread is twisted in the same direction from the base end of the screw body toward the distal end of the screw body as viewed from the proximal end side. 如申請專利範圍第5項之擠壓機用螺桿，其中，在上述各阻障部，設有沿上述螺桿本體之外周面於周向連續之阻障用圓環狀體；上述阻障用圓環狀體構成為，具有以軸線為中心沿周向同心圓狀連續之圓筒面。 The screw for an extruder according to claim 5, wherein each of the barrier portions is provided with a ring-shaped annular body that is continuous in the circumferential direction along the outer circumferential surface of the screw body; The annular body is configured to have a cylindrical surface that is concentrically continuous in the circumferential direction around the axis. 如申請專利範圍第5項之擠壓機用螺桿，其中，在上述各阻障部，設有沿上述螺桿本體之外周面螺紋狀扭轉之阻障用螺紋；上述阻障用螺紋，自上述螺桿本體之基端朝向前端，係與從上述基端側觀察之情況之該螺桿本體的旋轉方向成反向扭轉。 The screw for an extruder according to claim 5, wherein each of the barrier portions is provided with a thread for twisting along a peripheral surface of the screw body; the barrier thread is from the screw The base end of the body faces the front end and is reversely twisted in the direction of rotation of the screw body as viewed from the base end side. 一種擠壓機，係具備如申請專利範圍第1至9項中任一項之擠壓機用螺桿，利用該螺桿混煉原料並連續生成其混煉物而予以擠出；其具有：機筒，係具有供上述螺桿可旋轉地插通之缸筒；供給口，係設於上述機筒，對於上述缸筒內供給原料；及吐出口，係設於上述機筒，供混煉物擠出。 An extruder comprising a screw for an extruder according to any one of claims 1 to 9, which is obtained by kneading a raw material of the screw and continuously producing a kneaded product thereof; a cylinder having a screw that is rotatably inserted through the screw; a supply port is provided in the barrel, and a raw material is supplied into the cylinder; and a discharge port is provided in the barrel for extruding the mixture . 一種擠壓方法，係利用如申請專利範圍第1至9項中任一項之擠壓機用螺桿混煉原料並連續生成其混煉物而予以擠出； 係將原料藉由上述螺桿本體之上述輸送部於軸向輸送；藉由上述螺桿本體之上述阻障部限制原料之輸送，而提高施加於原料之壓力；上述壓力提高後之原料，流入上述螺桿本體之內部所設之上述通路，且於該通路內沿與上述輸送部之輸送方向同向地流通；使通過上述通路後之原料，於偏離形成有上述入口之上述輸送部的位置，返回上述螺桿本體之外周面。 An extrusion method, which is obtained by kneading a raw material with a screw of an extruder according to any one of claims 1 to 9 and continuously producing a kneaded product thereof; And conveying the raw material in the axial direction by the conveying portion of the screw body; restricting the conveying of the raw material by the barrier portion of the screw body, thereby increasing the pressure applied to the raw material; and the raw material having the increased pressure flows into the screw The passage provided in the interior of the main body flows in the same direction as the conveying direction of the conveying portion, and returns the raw material passing through the passage to the position at which the conveying portion of the inlet is formed. The outer surface of the screw body. 一種擠壓機用螺桿，係將原料一邊混煉一邊輸送；其具備螺桿本體，該螺桿本體具有沿原料之輸送方向之直線狀軸線且以該軸線為中心而旋轉；在上述螺桿本體遍及複數個部位設有：輸送原料之輸送部、限制原料輸送之阻障部、及供原料流通之通路；於其中之至少1個部位，上述通路係設於上述螺桿本體之內部，具有入口及出口；上述入口，為了使其輸送受上述阻障部限制而壓力提高之原料流入，係開口於上述輸送部之上述螺桿本體之外周面；上述通路構成為，使自上述入口流入之原料朝上述出口，沿與上述輸送部之輸送方向相同之方向流通，且上述出口，係於與形成有上述入口之上述輸送部偏離 之位置，開口於上述螺桿本體之外周面。 a screw for an extruder, which conveys a raw material while kneading; and a screw body having a linear axis along a conveying direction of the raw material and rotating around the axis; the screw body has a plurality of The portion is provided with: a conveying portion for conveying the raw material, a barrier portion for restricting the conveyance of the raw material, and a passage for the raw material to flow; wherein at least one of the passages is provided inside the screw body, and has an inlet and an outlet; The inlet is configured to open the outer peripheral surface of the screw body of the conveying portion in order to convey the pressure-increased material inflow by the barrier portion, and the passage is configured to cause the raw material flowing in from the inlet to face the outlet Flowing in the same direction as the conveying direction of the conveying portion, and the outlet is deviated from the conveying portion on which the inlet is formed The position is opened on the outer circumferential surface of the screw body.
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